It's more like, "Why have I kept *these* books" -- but honestly I do know. Mostly it's stuff I've most recently read, and if they are parts of a series, I have the rest of it somewhere. I would like to get rid of a few that were only meh. But only a few.

What I do wonder a little about is if it's ethical to keep books that I will probably never reread. At this point, I figure that they might be amusing for grandchildren's grandchildren. If they can make sense of them.