"Past is the past, never look into the past"
Mate, if we never looked in the past, then how are we meant to learn from our mistakes as you badly said it. World War 2 happened and people DID study and learned from their mistakes ( There is going to be World War 3, you heard it here folks ) So the last few lines are horribly said. We don't know what's in for the future for us, the only way is with a time machine which you highly don't have one.
I like to add that the third and final Anti-Christ has yet to appear codenamed Mabus as said in the prophecy Nostradamus.
Don't make arguments as I have As in my History