This is the brilliance that shines from the circus of the combined psyches of Le Clown and his Ringmistress.
Perhaps we love our superheroes because they represent contained madness, a madness we can all identify with to some degree, but mastered and used for good. Likewise, do we fear the supervillains because they encapsulate a complete loss of control? A psychological land of no return? A place where we all hope never to go, but wonder, if under the right (or wrong) circumstances, we see ourselves going?