I don't smoke much, I actually don't really want to because I don't think it's worth it. Not to say I'm "straight edge" or anything, because I agree that pot keeps a lot of my friends sane, just not something for me.
The only reason I smoke at all is because my friends get high a lot. I'll join in if they offer but I never spend money on it.
But I've noticed that with an actual pothead, all they really care about in life is getting high and as a result it's the only topic of conversation lol. The drummer in my band is cool, but so far this summer she has been getting stoned literally 4 times a day every day, which is a bit much for me lol