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The hero or villain debate has always been fascinating to me because personally, I would rather love the hero. Not because of their personality or anything but because if it came down to it, and the hero would be forced to choose between me or the world, I would rather they choose the world.
Because that's the world-that is billions of people with lives separate from your own that will suffer because of that decision. Your teachers, your classmates, your animals, a grandma that finally beat cancer, a child who was finally born.
"A hero would sacrifice you to save the world-" I'm gonna stop you right there because that's all I need to hear.
While I do see the appeal in picking the villain, I think I'd rather be loved by someone kind enough to put others first before themselves, and if sacrificing me is the way to do it, I'd have lived and died happy.
Either that or I'm reading too much into a fantasy plot and giving my two cents on a topic no one really cares about.