Generally, yeah. It's my chance to think over the game I just beat, internalize the ending and overall story, relive the best moments through the credit music, and also appreciate the people who made the game. For some games, the credits are just as much a part of the ending as the final cutscene (Most RPGs are like this, and I can't imagine the MGS3 ending without "Way to Fall"). Obviously, it's a little different for games I'm not super invested in, but I still try to at least sit through the credits for most games I end up playing to completion. It's just one of my gaming rituals at this point.
Also, as a side note, I love it when there's a thank you message to the player in the credits somewhere. Always makes it worth it.