Because it all derived from Superman. I mean, I love all the characters, but Superman is just this perfect human pop-culture distillation of a really basic idea. He's a good guy. He loves us. He will not stop in defending us. How beautiful is that? He's like a sci-fi Jesus. He'll never let you down. And only in fiction can that guy actually exist, because real guys will always let you down one way or another. We actually made up an idea that beautiful. That's just cool to me. We made a little paper universe where all of the above is true.
Grant MorrisonAmerican writers often say they find it difficult to write Superman. They say he's too powerful; you can't give him problems. But Superman is a metaphor. For me, Superman has the same problems we do, but on a Paul Bunyan scale. If Superman walks the dog, he walks it around the asteroid belt because it can fly in space. When Superman's relatives visit, they come from the 31st century and bring some hellish monster conqueror from the future. But it's still a story about your relatives visiting.
Grant MorrisonSuperhero science has taught me this: Entire universes fit comfortably inside our skulls. Not just one or two but endless universes can be packed into that dark, wet, and bony hollow without breaking it open from the inside. The space in our heads will stretch to accommodate them all. The real doorway to the fifth dimension was always right here. Inside. That infinite interior space contains all the divine, the alien, and the unworldly we’ll ever need.
Grant Morrison