The view that killing Adolf Hitler would just solve the world's problems is too simplistic.
Imagine this - Adolf Hitler is dead, The Nazi party still attempts a coup of sorts but fails like they did IRL but don't recover. Best case scenario - There's a German Civil war in the 30s and 40s, much like the one in Spain where fascist elements and religious elements fight together against the left, anarchist, and communist.
This allows Stalin to purge the army and rebuild the officer core without issues, with Germany in turmoil, Stalin decides to make a move in Poland, Poland falls - The USSR supports the communist in Germany and you have a communist Berlin-Moscow axis that probably topples France and supports Spain's commies.
Congratulations, by killing Hitler instead of killing 6 million Jews, you killed 30 million Europeans (probably including the jews as well) and doomed the world to communism. Want it or not, Nazi Germany was a key part in weakening the Soviets and it allowed the US to build a proper bulwark against communism in western Europe and keep them under control.
I see, you won't kill baby Hitler either. Curious to see if anyone would do that, and what reasoning would that be for taking him down. Thanks for the comment. It's the first and really on point with the topic.
Yes - I guess to answer the question without a rant, I wouldn't kill Hitler if I had the choice to.
You made it clear for me from the first comment. Now you made it clear for everybody, that will answer such a bizzare question.