I think that it's because every piece that we love gives us a different mental pleasure response, almost like drugs, and therefore, we (like addicts) never get tired of those feelings.
Why don't we tire of music?
So, there’s a lot of smart folk’s on this site, and I’ve been wondering why people never grow tired of listening to music. For example, we don’t read the same book over and over, nor do we watch the same TV show or movie over and over. But, we never get tired of listening to the same music. Why is this? What is it in our mentally that allows this to happen? Just curious... Thanks!