On the one hand, I don't judge people on their private lifes (or at least I'd like to think I don't).
On the other hand, I really don't want close friends using drugs because of the health issues.
As in, I don't want my friends to be more prone to having lung or larynx cancer, but I don't like being that guy.
Also, inebrated friends are pretty depressing to me. They just feel off and caricaturesque. A bit childish on my part, I guess.