You are probably right when you say 'But my opinion is if Hitler would have died there someone else would start WW2 or maybe not.'

They needed an excuse for a second world war and Hitler was their guy.

One has to ask what was the WWI peace treaty really designed to accomplish.

If you generally disbelieve authority, there are conditions in there that nobody in their right mind would agree to. What would the end result be? Sorry to take you down the rabbit hole... I like history so much that I became a history teacher and this post is right up my alley! Keep these coming!