How exactly would killing himself make him a waste of space? I don't understand that argument when I at least follow the others and understand the opinions. It's not like he didn't do anything while he was alive, if he didn't then I could see how you could say he was a waste of space.
Also even by this "fuck you suicide pussies" logic, I don't think that one decision makes him a piece of shit human being. It was a bad decision, yes and he hurt a lot of people from it, but there's no way it completely negates his life. In 50 years people are going to still more than likely enjoy his movies, and when someone asks what happened to him, they'll just say "Oh he killed himself" and shrug it off, "But he sure was fucking hilarious." Suicide is not his legacy...for this generation of people maybe but for the next that watch his movies, they won't care at all.