I think it's child abuse to have someone in the public eye too young. Society basically values wealth and fame and power at the cost of well-being. In the case of a child it's at the cost of someone's natural development. It's already hard enough to develop.
What makes Superman a hero is not that he has power but that he has the wisdom and the maturity to use the power wisely. From an acting point of view that's how I approached the part.
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Knowing that you are completely forgiven destroys the power of sin in your life.