I use Apple Music, it fits my workflow better and I can supplement the streaming library with stuff I’ve got in my local library. Spotify technically allows that too but not as integrated as Apple Music.
For discovery, I don’t use streaming algorithms as much, I’ve been using Rate Your Music for that. Got some great recommendations from its algorithms and its users. The site has been around since 2000 I believe, I’m convinced it will survive whatever the next phase of the internet will be.