I've had three kids and stopped smoking for the entire pregnancy each time. After a few months, I always started up again.I work in a jail and we have inmates that are here for months at a time and up to a year in some cases. They cannot smoke at all here and many of them keep talking about how they will have a cigarette as soon as they get out. I tell them, this is the best stop smoking program around, you haven't had a cigarette for 6 months, why have one now. Their response is almost always, "I like it."
It's so obviously NOT just a one-dimentional addiction.