If a person has lived an exemplary life and never broken the law, it doesn't mean they are good. To become good, one must experience evil, commit an act they could never forgive themselves for, and then look at it from the outside and choose what is better for them. But if you experience evil, it's like a drug that can draw you in. It attracts people because every person is cruel (either they don't understand it, or they believe the opposite), and every cruel being is tempted by what we call "Evil." And after all this, can a person still remain good? The answer is no! No person today can be truly good!
Where do we end up when we save the world?