heh, bro mobius bro, perhaps you have hit the right spot..
music, other than aural enjoyment, often is tie to the environment that we are in, the thoughts we have and the views we see, at the time of hearing and embracing the music. A representation of our emotions.
As life is changing everyday, the things we see, the experiences we have will change as well, through this changes, our taste changed as well. In general i mean(off course i know theres a lot who dont and it aint a bad thing too. Only problem is when resisting the unknown in general and stuff we dont know while holding on strongly to the past while limiting the many paths ahead)