I've taken the time to rebuild a large music collection locally. I've adopted every CD collection my friends and family have set aside to rust. It's immensely satisfying to scroll a gigantic list of 40,000 tracks and just pick whatever feels good, knowing I'm not contributing to a profile on my listening habits and that the file will instantly play flawlessly.

I have some excellent garage band CDs that probably have two or three copies still in the wild at most. Unfortunately sometimes the 25 year old burned CDs are missing the TOC data, but even the recovery process is satisfying.

(Same with the DVD collections.)