I say if you have a craving, give in. Just a bit. I used to be a heavy smoker. Like almost 2 packs a day. I didn't have a desire to quit, though the habit was grossing me out. I admit I'm addicted. But rather than deny myself and stress about that, i simply cut back to something more reasonable. I now smoke about a a pack a work week and one pack over the course of a friday, saturday, sunday weekend. One of these days I'll want to give it up completely I'm sure, but for now I'm okay.
But I agree with TH enhaling ANY kind of smoke, natural or otherwise, is not healthy