[thirdsun]

Because there's a lot of niche, obscure music missing from streaming services. People who are into music care about those gaps in the catalogue and they want to own their collection without fear of loosing access to their content due to changing rights, which might happen any day.

[iasay]

To note you can add your own music to Apple Music. About half my music was from CDs and iTunes back in the day.

[thirdsun]

I know. My whole collection lives in Apple's music.app - I jsut don't want to rely on their (or anyone else's) streaming service. I use Spotify merely to preview releases I consider buying.