Sorry, did you want a serious answer.
Actually when I went on a tour of the 1st WW sights in Belgium / France and stood there looking at 300,000 graves - I was shocked and couldent help wondering the same thing. I honestly wondered if either the first or second world war in Europe was worth that much loss of life.
I had driven there in my Lotus, and felt perhaps this many years later the only difference would be Id own a Porsche.
Its probably impossible to say as so much depends on tiny things. I came back and read a really good book on counterfactual history. Good for realising so much of our history and now current life is depended on mainly luck. Changes in the weather affect the outcome of wars. One verbal slip up can change an election. Then on the otherhand some things gain a momentum and small changes cant stop a tide - look at Egypt now for example.