This happened to me back in college. I authored a couple pages for some bands that I was in to, probably spent weeks pulling together history, lineup, albums, eps, etc. only to have them deleted unceremoniously with no recourse. That was my first and last attempt to contribute to wikipedia.

Same, I understand the editors/admins can't be experts on every topic but just because THEY don't think something is notable doesn't mean most people don't either.