I started using it when it was launched or shortly after, before most of the alternatives (including Youtube Music) even existed. It was great ~10 years ago.

I still use it because I'm invested into it: we have our premium family account, with all smart speakers configured to play songs using it, we have playlists, out of the music I like I know what's available and what's missing and I have acquired what's missing by other means (but switching to another service would mean different songs/artists would be missing, etc.)

Compound that with lack of time (work, parenting, etc.) and while the Spotify UX has really gone downhill, it would have to get really, really bad for me to switch...

Walled gardens are evil. But so convenient...