That's all wishful thinking.
Wars have been going on since pre-history guys.
One tribe hunting or foraging in what another tribe considers their domain. One nationality wishing to enrich it's self at another nationalities expense. One culture wishing to impose it's will upon another.
At the start of every war the public is enthusiatic to get into and win it.

He doesn't look the sort of fellow who precipatate the conflagaration which engulfed Europe, does he?

And the Kaiser just thought he was defending his nations way of life.

QUOTE
Kaiser Wilhelm's Account of the Events of July 1914
Reproduced from the English translation of his memoirs.
After the arrival of the news of the assassination of my friend, the Archduke Franz Ferdinand, I gave up going to Kiel for the regatta week and went back home, since I intended to go to Vienna for his funeral. But I was asked from there to give up this plan. Later I heard that one of the reasons for this was consideration for my personal safety; to this I naturally would have paid no attention.
Greatly worried on account of the turn which matters might now take, I decided to give up my intended journey to Norway and remain at home. The Imperial Chancellor and the Foreign Office held a view contrary to mine and wished me to undertake the journey, as they considered that it would have a quieting effect on all Europe.
For a long time I argued against going away from my country at a time when the future was so unsettled, but Imperial Chancellor von Bethmann told me, in short and concise terms, that if I were now to give up my travel plans, which were already widely known, this would make the situation appear more serious than it had been up to that moment and possibly lead to the outbreak of war, for which I might be held responsible; that the whole world was merely waiting to be put out of suspense by the news that I, in spite of the situation had quietly gone on my trip.
Thereupon I consulted the Chief of the General Staff, and, when he also proved to be calm and unworried regarding the state of affairs and himself asked for a summer leave of absence to go to Carlsbad, I decided, though with a heavy heart, upon my departure.
The much-discussed so-called Potsdam Crown Council of July 5th in reality never took place. It is an invention of malevolent persons. Naturally, before my departure, I received, as was my custom, some of the Ministers individually, in order to hear from them reports concerning their departments. Neither was there any council of Ministers and there was no talk about war preparations at a single one of the conferences.
My fleet was cruising in the Norwegian fjords, as usual, while I was on my summer vacation trip. During my stay at Balholm l received only meagre news from the Foreign Office and was obliged to rely principally on the Norwegian newspapers, from which I got the impression that the situation was growing worse. I telegraphed repeatedly to the Chancellor and the Foreign Office that I considered it advisable to return home, but was asked each time not to interrupt my journey.
When I learned that the English fleet had not dispersed after the review at Spithead, but had remained concentrated, I telegraphed again to Berlin that I considered my return necessary. My opinion was not shared there.
But when, after that, I learned from the Norwegian newspapers - not from Berlin - about the Austrian ultimatum to Serbia, and, immediately thereafter, about the Serbian note to Austria, I started without further ado upon my return journey and commanded the fleet to repair to Wilhelmshaven.
Upon my departure I learned from a Norwegian source that it was said that a part of the English fleet had left secretly for Norway in order to capture me (though peace still reigned!). It is significant that Sir Edward Goschen, the English Ambassador, was informed on July 26th at the Foreign Office that my return journey, undertaken on my own initiative, was to be regretted, since agitating rumours might be caused by it.
Upon my arrival at Potsdam I found the Chancellor and the Foreign Office in conflict with the Chief of the General Staff, since General von Moltke was of the opinion that war was sure to break out, whereas the other two stuck firmly to their view that things would not get to such a bad pass, that there would be some way of avoiding war, provided I did not order mobilization.
This dispute kept up steadily. Not until General von Moltke announced that the Russians had set fire to their frontier posts, torn up the frontier railway tracks, and posted red mobilization notices did a light break upon the diplomats in the Wilhelmstrasse and bring about their own collapse and that of their powers of resistance. They had not wished to believe in the war.
This shows plainly how little we had expected - much less prepared for - war in July, 1914. When, in the spring of 1914, Czar Nicholas II was questioned by his Court Marshal as to his spring and summer plans, he replied: "He resterai chez moi cette année parce que nous aurons la guerre" ("I shall stay at home this year because we shall have war"). (This fact, it is said, was reported to Imperial Chancellor von Bethmann; I heard nothing about it then and learned about it for the first time in November, 1918.)
This was the same Czar who gave me, on two separate occasions - at Björkö and Baltisch-Port - entirely without being pressed by me and in a way that surprised me, his word of honour as a sovereign, to which he added weight by a clasp of the hand and an embrace, that he would never draw his sword against the German Emperor - least of all as an ally of England - in case a war should break out in Europe, owing to his gratitude to the German Emperor for his attitude in the Russo-Japanese War, in which England alone had involved Russia, adding that he hated England, since she had done him and Russia a great wrong by inciting Japan against them.
At the very time that the Czar was announcing his summer war program I was busy at Corfu excavating antiquities; then I went to Wiesbaden, and, finally, to Norway. A monarch who wishes war and prepares it in such a way that he can suddenly fall upon his neighbours - a task requiring long secret mobilization preparations and concentration of troops - does not spend months outside his own country and does not allow his Chief of the General Staff to go to Carlsbad on leave of absence. My enemies, in the meantime, planned their preparations for an attack.
Our entire diplomatic machine failed. The menace of war was not seen because the Foreign Office was so hypnotized with its idea of "surtout pas d'histoires" ("above all, no stories"), its belief in peace at any cost, that it had completely eliminated war as a possible instrument of Entente statesmanship from its calculations, and, therefore, did not rightly estimate the importance of the signs of war.
But did that mean anything to the ordinary Soldiers? Maybe at first, but after they saw their friends and colleagues filling the butchers bill it changed.
QUOTE
The Christmas truce
Stories tell of the British and German soldiers playing football together in No Man's Land on Christmas day - but is this just a legend? Historian Malcolm Brown separates fact from fantasy.
The Christmas truce of 1914 really happened. It is as much a part of the historical texture of World War I as the gas clouds of Ypres or the Battle of the Somme or the Armistice of 1918. Yet it has often been dismissed as though it were merely a myth. Or, assuming anything of the kind occurred, it has been seen as a minor incident, blown up out of all proportion, natural fodder for sentimentalists and pacifists of later generations.
But the truce did take place, and on some far greater scale than has been generally realised. Enemy really did meet enemy between the trenches. There was for a time, genuine peace in No Man's Land. Though Germans and British were the main participants, French and Belgians took part as well. Most of those involved agreed it was a remarkable way to spend Christmas. "Just you think," wrote one British soldier, "that while you were eating your turkey, etc, I was out talking and shaking hands with the very men I had been trying to kill a few hours before! It was astounding!"
"It was a day of peace in war," commented a German participant, "It is only a pity that it was not decisive peace."
So the Christmas Truce is no legend. It is not surprising, however, given the standard popular perception of World War I, that this supreme instance of "All Quiet on the Western Front" has come to have something of a legendary quality. People who would normally dismiss that far off conflict of their grandfathers in the century's teens as merely incomprehensible, find reassurance, even a kind of hope, in the Christmas truce.
This was not, however, a unique occurrence in the history of war. Though it surprised people at the time - and continues to do so today - it was a resurgence of a long established tradition.
Informal truces and small armistices have often taken place during prolonged periods of fighting and the military history of the last two centuries, in particular, abounds with incidents of friendship between enemies.
In the Peninsula War British and French Troops at times visited each others lines, drew water at the same wells and even sat around the same campfire sharing their rations and playing cards.
In the Crimean War British, French and Russians at quiet times also gathered around the same fire, smoking and drinking. In the American Civil War Yankees and Rebels traded tobacco, coffee and newspapers, fished peacefully on opposite sides of the same stream and even collected wild blackberries together. Similar stories are told of the Boer War, in which on one occasion, during a conference of commanders, the rank and file of both sides engaged in a friendly game of football.
Later wars too have their small crop of such stories. It is rare for a conflict at close quarters to continue very long without some generous gestures between enemies or an upsurge in the 'live and let live' spirit. So the Christmas truce of 1914 does not stand alone; on the other hand it is undoubtedly the greatest example of its kind.
There are certain misapprehensions regarding the Christmas truce. One widely held assumption is that only ordinary soldiers took part in it; that it was, as it were, essentially a protest of cannon-fodder, Private Tommy and Musketier Fritz throwing aside the assumptions of conventional nationalism and thumbing their noses at those in authority over them.
In fact, in many cases, NCOs and officers joined in with equal readiness, while others truces were initiated and the terms of armistice agreed at 'parleys' of officers between the trenches.
There is also some evidence that while some generals angrily opposed the truce, others tolerated it and indeed saw some advantage in allowing events to take their own course while never for a moment doubting that eventually the war would resume in full earnest.
One other misapprehension about the truce calls for rebuttal. There has grown up a belief, even among aficionados of World War I, that the Christmas truce was considered to be so disgraceful and event, one so against the prevailing mood of the time, that all knowledge of it was withheld from the public at home until the war was over.
In fact, the truce was fully publicised from the moment news of it reached home. Throughout January 1915 numerous local and national newspapers in Britain printed letter after letter from soldiers who took part; in addition they ran eye-catching headlines ("Extraordinary Unofficial Armistice", "British, Indians and Germans shake hands"), and even printed photographs of the Britons and Germans in No Man's Land. Germany also gave the event press publicity, though on a smaller scale and for a shorter period of time.
Publishing a year later, Sir Arthur Conan Doyle in his history of 1914 called the Christmas truce "an amazing spectacle" and in a memorable description, saluted it as "one human episode amid all the atrocities which have stained the memory of the war".
The phrase sums up the attraction of the truce: it is the human dimension which means that this relatively obscure event in the fifth month of a 52-month war is still remembered and will continue to catch the imagination.
In a century in which our conception of war has changed fundamentally, from the cavalry charge and the flash of sabres to the Exocet, the cruise missile and the Trident submarine, the fact that in 1914 some thousands of the fighting men of the belligerent nations met and shook hands between their trenches strikes a powerful and appealing note. It is perhaps the best and most heartening Christmas story of modern times.
Given the choice, no man wants to kill another, unless they are deranged.