Naw, I don't smoke. Some of my friends do, and some of my older friends who I don't hang out with anymore are extremely heavy smokers and addicts, etc.
The image of someone my age smoking a cigarette really puts me off, because it's really awkward. They're doing something illegal right in front of you without a care in the day. I don't want to look that way, I don't want to make my friends feel the way I do when I see people my age smoking, and I have a narrow windpipe to begin with.
Smoking would kill me by the third drag. <_<
And it smells pretty bad as well. :/