Nothing very terrible comes in my mind when I think of a goth. Black probably is the main thing. I was goth myself for some time and my sister is goth now. I know it's a teenage period that passes (at least for most people)- you can't keep on loving only black and listening only to heavy music, sooner or later you get interested in other things.
Well goth to me also is a music type- dark, heavy music. It's still my favourite but it doesn't mean I dress black and call myself goth.
Well my sister says that goth is a whole philosophy, but when I asked her to explain, she couldn't ~.~ Yea... that tells something, doesn't it?