I really hate that regardless of the film. Whatever happened to the concept of a slow curtain so one could emotionally compose oneself? It always used to be the case in cinemas that the lights stayed down for the duration of the credits (I'm old enough to remember such wonderful times). I bet the current way of doing things is because some health and safety nitwit jobsworth is worried about someone tripping over a piece of popcorn on the way out or other such bollocks.