How has Superman changed?

Nice post about how Superman has changed over the years.

The Golden Age Superman was almost anti-authoritarian. As a reaction to the powerless people felt during the Depression, the GA Superman broke into people's houses (including the Governor), beat the snot out of normal humans, hung them from flagpoles, grabbed unsympathetic employers and forced them to experience the deplorable conditions of their workers... . Superman (no matter what Frank Miller might think of him), has never been about supporting authority, but about having the power to circumvent it.

I think one superpower that is not often mentioned that most heroes have is Super-Morality. Flying and super-strength are nice, but having the power to do whatever you want to whoever you want with impunity and not doing so shows morals and integrity that most of us don't have.