Did you go see it yet? I know someone who had a fascinating discussion with her son after the movie. He was puzzled as to why Superman cried after he had to kill the bad guy and she told him that it was because Superman never wants to kill. He only wants to help. He never uses his strengths and gifts to hurt. He's a good person.
Her son walked away with a major lesson that he probably wasn't even looking for at his age.
Did your kids watch it? Did they enjoy it?