After 50 years of 1-2 PAD, I quit cold for 3 years, then started vaping. For about a year into vaping, I was still reaching for my shirt pocket periodically, but since I now have my REO there, I'm over it!
Looking back, it wasn't the nicotine, although about a year into vaping I started using 18mg (instead of 0mg I started with). There was a tiny "kick" from the nicotine that made me more alert (subjective, I know). The physical ritual was a habit (reaching for pocket, fishing lighter out of another pocket, taking a drag after each sip (gulp

) of coffee, etc. But those were easy to ignore.
What I *can* say is that I was addicted to the MAOI's in cigarette smoke (that "ahhhh" feeling when you took a drag after a prolonged stretch without a cigarette). But that part was actually gone in about 2 months (from quitting cigs), although the mental part (the desire to fire up) took (me) about 2 years, and truthfully, every few months the "idea" of lighting up still creeps in, but only momentarily. I know it's not true for some, but for me the smell of a freshly lit cigarette is still quite pleasant, and brings a smile to my mind.