I've never smoked, but I've been around people that do. What do people feel during/after smoking? It doesn't seem to make people high or hallucinate or anything. It maybe mildly relaxes them?
It makes food taste like shit and by extension you want to eat less. At least, that was my experience with smoking for years. When I quit I gained like 40 lbs.
I could go until the late afternoon without eating with the power of nicotine. I would say it's about the same as coffee but you can smoke more frequently than you can drink coffee (usually).