I think an important point is, if the parent isn't going to enjoy the movie, why not spend the time doing something else that both of you will enjoy? That certainly seems more logical than going to a movie that one of you doesn't like. For example, I understand that in America parents like to "play ball" with their children. But I have to admit, if my parents tried to play ball with me I'd assume that they had suffered some sort of brain damage.

DAD: Now you throw the ball to me, son.
CHILD: Why? If you wanted the ball, why did you throw it to me?
DAD: It's a game.
CHILD: No, games are fun. I'm surprised you don't know that.