I have a similar opinion, but with one big caveat (which means I'd be happy to drop Spotify in a heartbeat): I still have access to all those old albums I bought with my wages and allowance. I've digitized them, and they have migrated from computer to computer.

And a large number of those albums/songs... aren't on Spotify.

And all the songs I've 'discovered' on Spotify will also be gone some day, because they're not from mainstream artists. If I want to listen to them in another 10 years, I'll have to buy them.