I started smoking when I was 15, at boarding school. I did it because back then I was in kinda the same situation MazKid is in now, and I thought that if I smoked, other people would be impressed, and I'd get liked more.
However, I didn't really enjoy it that much, although the rush of doing something that was against the rules was quite cool.
But if you were caught smoking by the teachers, it was an automatic one-week suspension, so your parents had to come and pick you up. Mum doesn't drive very much, so I knew that it would be my Dad that picked me up and drove me the 1hr journey from school to home. During which time I'd get to explain why I'd been suspended.
Funnily enough, it didn't really seem worth it after that logic kicked in, and I quit, still before I was 16 - the legal age for smoking in the UK. Now I'm knocking on the door of 30, and I still think from time to time, when I'm getting really exasperated with the world, that I'd like to smoke, but I just talk myself out of it.
That said, I drink too much at the moment. Oh well, with so many vices on offer, one man's meat is another man's poison...