Good is stronger than Evil. Get comfortable with the idea because it is fact. Good the foundation of Society. Society is the unwritten agreement, that if people step out of the woods to live together, they can avoid being eaten by tigers, and can eventually make digital watches, and then life will be a little better for everyone. Society is a good thing that even Evil must work to preserve.
Society can only function when there is a social contract between consenting persons that laws will be obeyed, and punishments are fair (this is called order and law). 16th century philosopher Immanuel Kant put it best when he said that an act can be considered “Morally Permissible,” if it would be good for everyone to commit that act.
Is Theft Good? No it isn’t. If everyone stole, society would collapse because the system of work and reward had been reduced to an arms race.
Is Honesty Good? Yes. If everyone were honest to each other, more could be accomplished because persons looking to treat others unfairly could easily be identified.
Good acts work to reinforce order and law, and Evil acts work to undermine it.
This is the very root of the problem with Evil. By nature, it seeks its own undoing, so if allowed to prosper, Evil would destroy society, and thus itself. This is why Heroes are necessary, and Villains so often, are forced to “go easy,” on them. A Villain wants to be successful. He wants his evil plans to work, and he fully intends to frighten the populace, to personify their fear, and to accomplish his nefarious agenda, but he needs to do this within a functioning society. He therefore needs the Hero alive, to give people hope that there is still justice in the world, whether or not there actually is.