I don't smoke cigarettes, because I find them unpleasant. Don't like the smell, the taste, or anything about them. I've had a few, mostly during a nights of drinking, but I felt no inclination to continue.
I do smoke marijuana, but I'm trying my darndest to switch over to vaporizing, because I really want to avoid lung cancer as much as I can, and I prefer the vape high. (Frankly I don't understand why it's still illegal, but that's another topic for another time.)
Cigars with a friend can be nice as a way to wind down a night, as long as they're good.
I love some good hookah, but that's only ever once for every one or two months.