Outside of a small handful, I don’t rewatch movies and feel no drive to keep my own copies. I keep a “to watch” list in Letterbox’d and that is excessively long, but I rarely have more than a couple dozen movies downloaded from that list at any given time. That’s how I do books too, long “to read” list but actually downloaded, not much.
Music is a different story. I can pull up the playlist for the first mixed CD I burned in middle school and everything since then.