I smoked from the age of 14 to the age of 22 or so.
I started because of peer pressure. There was this big, blond, mean chick who was always threatening to beat me up, and I was friends with one of her friends. The logic was, if I started smoking like they did, I would fit in better. It didn't really work.... we were never on the same level to begin with, but I didn't understand that then.
I remember actually having to get used to the smoke, because the first few times you feel like you are going wretch wickedly. You have to learn to tolerate the poisons. Isn't that special?
I look back and am just amazed at how desperately I must have wanted to be accepted. I think I also wanted to rebel to some degree. There is not much fun in being a little-goody-two-shoes know-it-all and I wanted to be seen as having a bit more of an 'edge'.
I am infinitely grateful that A) I was able to quit with relative ease and B) I don't really care to fit in anymore. If I do, great, if I don't... oh well.
I admire people who never gave into the peer pressure!