Why doesn't Batman just kill the Joker and end everyone's misery?

Can we hold the Joker morally responsible for his actions?

Is Batman better than Superman?

If everyone followed Batman's example,

would Gotham be a better place?

What is the Tao of the Bat?

Batman is one of the most complex characters ever to appear in comic books, graphic novels, and on the big screen. What philosophical trials does this superhero confront in order to keep Gotham safe? Combing through seventy years of comic books, television shows, and movies, Batman and Philosophy explores how the Dark Knight grapples with ethical conundrums, moral responsibility, his identity crisis, the moral weight he carries to avenge his murdered parents, and much more. How does this caped crusader measure up against the teachings of Plato, Aristotle, Kant, Kierkegaard, and Lao Tzu?