I never smoked with any regularity, but I was a "social smoker" for quite awhile... I somehow managed to not get addicted to it tho, which is good. I never liked most regular cigarettes anyway, usually just the fun trippy flavored stuff (Ecstasy, Liquid Zoo, etc), cigars and pipe tobacco were ok too. And I used to smoke certain other stuff too (*ahem*). But i haven't smoked anything, tobacco or otherwise, in a good long time now, so its all good.
---Jamin