Some of these actors/performers don't have a grip on reality, that's why they die young.
Booze, drugs, partying, all of that money available and in a seemlessly never ending supply.
They are their own worst enemies.
I find it hard to feel sorry for them at all, except it's a waste of talent.
Belushi, Joplin, Hendrix, Morrison, Radner, Farley come to mind.
Charlie Sheen has a lot going for him if he would straighten himself out.