I got through such a phase too, didn't last very long though. For a while, I thought I had found the best music genre in the world, but it turned out I'm wrong.
I would like to say though, prog was definately the thing that opened me up to all kinds of music, because it has such a broad scope when done right. Idk, prog is still great. And by 'prog', I don't mean Sonata Arctica.