[Nanzikambe]

Though I agree with your main point; in my experience the smoker-at-the-office analogy actually doesn't work. Most businesses won't let you smoke near entrances for obvious cosmetic reasons. There's either a smoker's corner or folks duck out some back entrance.

I quit whilst working by avoiding places that were part of that "ritual": the cafeteria, fire escape/stairwell & pedestrian entry to the garage.

Disclosure: I've long since started again, I work from home now :-P