Yep, totally do. I'm usually on the lookout for something new, but I have no fault with rereading a book when the mood comes up. A lot of my reasons seem to line up with yours: it can be a good decompressor, the novelty kinda returns after a while, certain books are Comfort Books. Besides that, I think there's already a default understanding for games being replayed and TV and movies being rewatched. Why does reading have to be any different if I don't want it to be 😅?

There's also the utility in doing so with textbooks or literature I read for professional reasons. Sure, manuals focused on tech rather than practices and technique might not be as evergreen, but even tech specific manuals often have specific strategies that could be worth taking the time to get a reminder of. Just gotta make sure that information is indeed still applicable and hasn't been deprecated somehow.