I really miss Google Play Music. For my needs, it was the perfect streaming service.
Youtube Music is a huge step back. Spotify is far too playlist and recommendation happy, I want to listen to albums not curated lists. Tidal is decent, but similar to Spotify. Apple Music is the one I haven't tried for more than a couple of days and I don't recall what I didn't like about it.
Same here, GPM recommendations were fantastic and the interface was very simple and nice to use. When they moved the service to YouTube music half my playlists were filled with poor quality songs uploaded to YouTube, it's a mess.
Spotify is okay and does have some nice features in the way that casting works and multiple devices joined to one account, but it's certainly not as enjoyable to use.
The point I was making about Spotify is that even if I solely listen to music as full albums, I only get recommendations for playlists. I rarely want to listen to a playlist. There are a number of other things I don't like about Spotify, but it works well enough.
I miss Google Reader and Google Wave the most.