I'm a high school student (to be entering my senior year). I would definitely not call myself a hacker by any means, and while I am very passionate about math and science, at the moment, I would first and foremost identify myself as a jazz bassist (however, his may be due to the fact that I am currently at the Berklee college of contemporary music, studying in their five-week summer program). I have in the past ventured a bit into programming, but not very seriously, and my biggest achievement was probably a roguelike written in brainf*ck that I abandoned half-way through. Although I am very passionate about jazz, I intend to pursue a career in science (though I am not sure exactly what).
I use HN because I can easily find many math/science/technology related articles that I find very interesting. Also, I find that the articles and posts on here tend to give me a different perspective on a situation than one might find elsewhere.