I often have the issue it worth it debate with myself…

I use a turnkey version of Tracks for todo purposes- but is not life changing.

Also use plex for my music and movies (but also subscribe to 3 services but as these services removed content Plex has a place). Trying to buy my music on the smaller digital platforms or on second hand market - but fewer CDs available for newer content! 🤔.

On the plus side- your post has made me interested in paperless and obsidian.

Although being heavily on Apple not sure if there is a huge benefit over simple notes