haven't you heard of spotify??????
Yep. Had a Spotify Premium subscription for a few years now. Reasons why it won't replace my iTunes curated music collection:
* No control over whats available. if you're only ever following the 'top 10', Spotify has you completely covered. If you want the Beatles, specific album masterings, much classical beyond that released since 2000 then you're not covered completely by Spotify. My iTunes library carries quite a bit of material (Beatles, specific performances of classical works, varying cast recordings of Broadway/West End soundtracks, often out of print albums/EPs/singles & b sides).
* No control over masterings. Often Spotify only carries the most recent master of an artists catalogue, sometime meaning that Spotify carries the loudest, most dynamically compressed version of an album. My iTunes library carries masterings of albums I've gone out of my way to specifically acquire).
* No control over what gets withdrawn from Spotify's catalogue. They had an awesome 10CD equivalent anthology of Philip Glass recordings. Had it in a Spotify playlist, listed to it often. One day it was gone from Spotify - locally cached tracks unplayable.
Still keep the Spotify Premium subscription though!
* Can listed to whole albums I'm interested in and might buy, rather than the 90 or 30 second previews on iTunes. Can offline sync Spotify playlists on the phone to save using airtime/data allowance up streaming over 4G/LTE.
* Spotify Premium allows me to use Spotify with my Sonos setup at home.
* Can still stream on demand should I want to, as long as I have enough data allowance left.
Paying for the highest capacity. Paying for iTunes & CD purchases still. paying for the Spotify subscription. I'm probably Apple & the music industry's ideal customer, especially these days.
iTunes + iTunes Store + existing CD rips + Spotify Subscription + large capacity iPhone = music bliss.