You're welcome. And if there's anything else I can give you the green light on, let me know. (yeah, right).
I think you're right about those who don't quit are just reacting to the input from others. The difference is that the smokers feels that the input is negative as you say - a criticism. That's not the non-smokers point of view. It's advice; as in, this ain't good for you and it makes no sense, so what's the point? Rebelliousness is a known characteristic to dependent personality. Complicating this is that non-smokers don't like to breathe second-hand smoke. But to each, their own.
(Do you actually play that music?)