HISE (How It Should Have Ended) quite commonly features the problem of "why doesn't Superman just keep saving the day". Any episode featuring or about the Superhero Cafe (Diner?) is hilarious and you should watch them. It tickles me because my analytical nerd brain can't get over the Superman Paradox, as well as "why doesn't x do y" or "why don't we kill off The Joker" and so on and so forth.
Some RPGs have answered these questions. My favorite comes from Wild Talents: "Because that's boring and athematic and also don't do that." (Wild Talents also has a system for losing faith in yourself, which is the other half of that why-not question.)
Superhero games are for certain mindsets. I hope that "1963" expresses the kind of player they're looking for up front, maybe not by saying if you're x don't come here, but by explaining what the game is meant to be about.
Signed,
- Thenomain
(Not a Superhero Kind of Person)