The end of Hitler.

Hitler told Chamberlain the soldier had pointed a gun at him but spared him. "That man came so near to killing me that I thought I should never see Germany again," Hitler is alleged to have said. "Providence saved me from such devilish accurate fire as those English boys were aiming at us

Would it have been better for Hitler to have been taken out in war than to have learned what we have from his rise to power?

I dont see how would that help me.

Wouldn't some random general just take his place in the Nazi movement and likely end up being a more humble and superior military strategist? One that even if he ignored his advisors would likely still be superior in planning a war