YMMV: Villains by Necessity

  • Fridge Logic: If the world would end once the last evil is eradicated, then it appears that the last evil could not possibly be eradicated, because the world ending would be the last evil. Of course, In-Universe, nobody may realize that.
    • The forces of Good might not even believe (if they knew it was going to) that the world ending in this way was evil, given their other views of things.