A shift in Ideals

My music taste is a series of polar backlashes. Not polar as in very cold, polar as in opposites (although it could be considered a cold shift). During a period of change, I will generally put my entire music library, all contained on my computer, on random. This is how I generally figure out what kind of music I like right now. I will often hear songs which I have never heard before. Because of this, it is quite enjoyable just to listen to the random music I have acquired over the past couple years.
Another topic of interest is the playlists infecting the left side of my iTunes. I never use them anymore, but they were mostly used for mix CDs I provided specific people. I like to look through them and see what I used to listen to. Most recently, I've been falling out of Ska. I got there from a backlash of Emo music. It fits with the time, and I enjoy it greatly. It wasn't me anymore. Ska isn't really me anymore either. So where do I go from Ska?
Hardcore/metal/whatever you want to call it.
Genre's are getting so mixed anymore it's pointless to try and figure it out.