Super Heroes Do Exist

How come nobody has ever tried to be a super hero? Putting on a mask and helping people, it can't be that hard! The comic books had it all wrong, it doesn't take super powers and a side-kick to be a super hero, it just takes courage and bravery. Look back to Nelson Mandela, Will Rogers, Teddy Roosevelt, Martin Luther King. Did any of them have super powers?
I go by the alias of Kit Miller A.K.A Hit-girl. The one who is infamous for fighting crime. My perilous story begins here...