When I joined head-fi I was 12. My advice to you: run. If I'd known back then I'd have to be spending $105 a week on rent in the future I would have saved all that headphone money.
Also when you look back in four years time at the posts you made when you were 15 you'll cringe.
Yup. I joined this place when I was 14/15 and when people necro threads I posted in, I try to avoid reading what I said.
Also, I likewise advise you to leave while you can. If you find something that you like, stop buying new things. I got curious and tried the HE500, and when I found flaws with even that, I've been continually trying to find what my preferred sound signature is, even within different genres. Heck, now I'm saving up for a setup consisting of an RS1 (or AD2000, wasting a lot of time here reading as much as I can about them), M100, and Q701, and I'm sure I'll still find some issues with all that. You get really picky after a while.