Always. It's my chance to relax and reflect on the game, be happy about the little win of finishing something, and think about what to do next. The tranquil credits moments are kind of my reward to myself for winning. I also enjoy reading through the names and seeing if I recognize anyone.
Sometimes it can get on my nerves though. Rayman Origins was like that, and I think a lot of Ubisoft games are supposed to have the same long-credits issue. After a while it's just annoying. I get it, I get it.