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My first girlfriend was a goth and I was in a phase similar. It never worked out as she was cheating on me a bunch.
Being older now I see them as attention seeking kids who try not to look attention seeking. They have this idea where "nobody understands me" and yet they all say the same stuff and dress in black and dye their hair or whatever. They'll deliberately stop listening to music if they get big just because "everyone" is listening to it so they'll deliberately find other bands to avoid putting themselves into the "mainstream" spotlight. If you found a popular person in school that all these kids despised you could easily piss them off by taking one of these goth's music CDs and having that guy listen to it and tell his friends he liked the music.