Never smoked, don't plan to try it even if it becomes a health food. Just plain gross and smelly.
Also, I know for a fact that most of my non-smoking friends would never date a smoker long-term. Kissing a smoker grosses them out... maybe it's a superficial thing, but man if I was a smoker I'd hate to have my only dating options be other people who smell like me. That would be enough reason for me to quit!!
(Sexual selection, anyone?)