Gotham Is A Prison

This is just a little note to those who would like to pull some sense of morality out of their entertainment. Gotham is a closed city, a prison; for all practical purposes no one ever actually leaves. It's not explicitly stated, but it's part of the story, for otherwise, every 'good' person would leave.

If, for instance, you have your kids in a bad public school, you have two choices. You can do the right thing for them, take them out of that crappy school and get to teaching them properly. Or you can destroy your children's life in the name of some sort of gobbledlygook, whether it's socialization, a perverse loyalty to public school, or that you've become so besotted with the idea of equality that you refuse to recognize what the less intelligent are doing to your children.

Whatever. In real life the good people would leave Gotham. The less bad, in that they were just neglectful of preserving themselves and their families, would die.
That only leaves criminals and politicians, neither of which will last long on this earth without a healthy host to feed on.

If you don't include this in your equations, you'll get prison morality. It may be a somewhat decent sort of morality, but it's only fit for prisoners, not for the free.