Doesn't bother me, since I smoke. I started at 15 but i did quit when I was 22, but started up again when I was 25, when my mother died.
I don't like smoking with people around me or in front of people, it's somewhat random in terms of when I smoke, so I'll go days to weeks without smoking when I do it's probably 1 to 3 rollies a day so compared to a regular smoker I'm barely smoking anything, but I generally enjoy it which is probably a weird thing to say.
Most people don't actually know I smoke and are somewhat surprised when they find out then they forget again cause they never see me do it.
Haven't smoked weed since college but people are free to do as they please really.