why can't we all be superheroes?

Why can't we all be superheroes? Really, why? I mean, I know a lot of people are jealous of me, cause I'm THE MIGHTY SPIDER ROBOTULK! Seriously, look in the picture. There are a lot of Supergirls there... Um... why are there so many Supergirls? I mean, look, there's one SuperMAN and one POWER girl... Wait... that's not my point. Anyways...

1. If everyone was a superhero, what would be so special?
2. If everyone was a superhero, what would be the point of secret identities...?

Really!