I quit smoking a while back, but in my dreams I am always smoking or with my smoking friends.
I don't miss it per se, but I think I will always miss what I got out of it, relaxation. So in my colorful, vivid, dreams I am still a smoker.

I wonder why that is?
I didn't start smoking until my kids were past being teenagers. My MS was going down hill on a sled. I used it to comfort and reward myself too. My grown kids don't smoke.
Why I quit.
It got a bit too expensive, IMO, in my state. I never smoked that many cigs, a few a day, maybe 10 the most. Then went down to 3 a day for a long time, then patch at the smallest amount patch #3, for a few hours a day.
While visiting my Son and DIL in Ohio, I noticed the cost was less than half our cost, for a pack of cigs. Ridiculous.