@MarvelPotterhead27 You do know that if time travel worked like it did in Endgame, going back in time and killing Jack the Ripper, Hitler, Mao Zedong etc. wouldn't change anything once you got back to the present? You'd just be creating an alternate timeline where they never did those terrible things.
I'd go to the 60s so I could see Jimi Hendrix in the flesh.