valdosta: "There's nothing more unattractive to some people than a woman smoking"
You've got that right - I won't even date a smoker, since I got to see 2 uncles die of lung cancer and my father die slowly of emphysema, as well as finding the kissing of 'ashtray' quality. Not interested.
But smoking is tougher overall, because it is physically addictive to so many people, whereas gambling may be psychologically addictive but not nearly so many people have a pathological compulsion to gamble.