Seeing the world through the villain’s POV adds to the complexity of the moral decisions made by the villain and creates a richer story. It’s fun to imagine Star Wars from the POV of Vader. He’s trying to end the fighting and restore order to the galaxy and then his kid, who was taken and hidden from him by his best friend and mentor, shows up and throws a wrench it. It’s a simple arc in that he realizes terror and power isn’t the way to keep order but we’ve all fantasized about being all powerful and making the universe work the way we think it should.