One thing about me is that I am adopted. Because of that I find I can relate to Clark Kent, Billy Batson, and Bruce Wayne. Kids, whether they be adopted at birth or come out of a foster home, need to realize that they can be heroes just like these guys can. Comic books can be moral models for kids to follow if the proper guidance is given.
They can also be moral models for adults. Dark Knight Returns is my favorite comic, because it changed me from a demotivated, unemployed consequentialist into a motivated, essential working deontologist.