Got tired of not having a click wheel in my life, and the Tangaras haven't come out yet, so on a whim I bought a refurbished iPod on ebay. Busting out the mp3 library from the external hard drive deep freeze. Pretty excited.
I say it's because I'm tired of not having a click wheel in my life. But if I'm being honest. I just miss sharing mp3s in general. Streaming has utility in a different way. But nothing will ever replace biking over to my friend's house with an external HD and very casually copying like 400 absolutely fire/historically significant albums.
It's not about the cost, I go around and send money to all of these artists. It's about getting music recommendations from friends in the form of just copying their entire collection in one fell swoop.