The thing is, iTunes - the music organizer part - is still one of the best ways to organize your music collection, make automated playlists, make them to sync. Apple bought iTunes and then developed it back when they made iPods and needed people to manage copying the music to their players easily, and there were some great design decisions made back then that are still present now.

However, they also piled tons of crap on the core functionality. Which sucks. But I haven't seen an application that is as good as iTunes for music library.

Anyway I switched to Spotify too, but the UI is frankly pretty terrible, especially on desktop.