Yeah, totally, for ages. And books owned, bought, discarded also. Started with an excel file, still on going.

Started just with books ordered, or books I wanted to order, and more and more it is useful to me to keep track of what I own and have read. I am bad at titles and author names, and it is helps me remember books I only remember vague things about.

I also keep track on goodreads and calibre (many many extra columns, and empty book records also).

I do not keep track of how much or stats or that sort of stuff, just list of what I read and when.