Superheroes
When I was a bit younger, and as big a comic book fan as I am now, I wondered why there weren't any superheroes. No, not real ones with powers and stuff.
I wondered, with all the nutcases there were in the world and the huge cultural penetration of superheroes, why at least one or two of these nuts didn't dress up in tights and try to fight crime. Never seemed to happen though.
Things change.