It provides a nice interface for managing and editing tags that integrates well with other command-line tools and keeps your file system well-organized/up-to-date as you edit the tag contents. The batteries-included integration with datasources like musicbrains and discogs is nice, but, at least for me, beets is mainly a better tool for accomplishing the same tag and file janitoring I was doing with things like foobar2000 and eyeD3 a decade ago.
Thanks for saving me time, I guess? I just maintain very spartan id3 tags on my music, artist, album, song name, track id, and that's about it.
What more would beets give me? How would it improve my experience?