I listen to ~1500 different tracks from the 19th Century all the way up to the present. I loved iTunes but the “share with friends over the internet” capability has become indispensable recently.

If Spotify keeps going downhill (and let’s face it, it probably will) then I hope someone creates a decentralized playlist-sharing service so that I can put stuff up. Not even necessarily a piracy service, it would be nice to just have links to buy a friend’s playlist’s content on such a service.