Music provides "inherently new and unique experiences" too, and if your music doesn't, then you are likely listening to the wrong music. You're content listening to 275 songs for decades, and that's fine, but you can't act like it's crazy for people to have life-long passions for music. You simply don't care about music, and that's fine - for you. The fact that a professor could come to you and say "stop listening to music" and you did speaks volumes about how important music is to you. (Read: it's not.) If a professor did that to me I'd probably have stopped taking much of what he or she said. I would go insane being limited to a playlist like you have.