1 reason and 1 reason only. Lossless. Why Spotify still doesn't offer this as an option is beyond me. I get that its a small amount of people who care but still why not offer it? I would pay a little more to use their service.
For me, it was enough to prove that lossy is good enough for everyday listening.
Compressed classical music annoys me to no end, although for a long time I couldn’t tell why. Then I found out, the problem is the artifacts, which you may not be aware of but they do affect your emotional response.
This page has an amazing description of the issues: https://www.soundonsound.com/techniques/what-data-compressio...