I have also found that recently I do not care to listen to other genres of music, I still like it, but I just enjoy listening and learning about new piano music so much that it takes all my time. I have an enourmous collection of jazz, house, jazz funk and soul music that I haven't really touched for over a year now. Even if my taste in classical music is rather narrow (basically if there's no piano, then it's not for me) there's still plenty that I don't know yet and so many composers to learn about... But it doesn't really matter, probably at some point my focus will change again.