For me, having access to all the music in the world is only marginally better than what I had before when buying CDs (or records even); I don't listen to more music than before. What I really love, instead, is being introduced to a new track that captures my interest, a track that I know I will be listening to multiple times in the future. The quality, and the fact that I would have probably not have found it by myself, or not liked it without the context.
When I was younger, when I had enough pocket money, I would go to the record store, and the problem wasn't how to get a CD, because they had oh so many!, but what CD to get. For this, I relied on friends, radio stations, and the shop keepers. They all had a good portion of the music world in their head, with their own taste and opinion about what's interesting, and I found many gems this way. Automated recommendations don't quite do it for me, nor I have been lucky with other people's playlists; I gotta get acquainted with the curator first in order to trust their curation.
So I listen to SomaFM, and when something gets me interested I go and buy it or add it to my library. Best of both worlds!