I smoked off and on for a while, but didn't "start" until I was 18. Habit never stuck. It made food taste bad, and it didn't make me feel relaxed or make me less stressed, which are two things I wanted to happen. I'll still bum a cigarette off of someone if I'm around people smoking, but that's happened maybe once in the last year. I'd enjoy a casual cigar if I had money, and usually do when I'm around my friend. I do it for no reason other than to have something to do to fill in awkward silences. I've never been a drinker either, tried it once with a close friend the weekend after my great-grandmother died, and I felt like I was being ignored by someone else. Didn't do much for me, so I never really started that habit either. I'm fairly wary of being "addicted" to things. My dad was a massive drug addict, so I've always been extremely careful of myself. I have an obsessive personality anyway, and I'd rather it be focused on depressive thoughts of others than smoking or drinking.