It may sounds strange, but I want to kill all the superheroes. 1° because we need heroes, and not super-heroes, and 2° because, well, because they dress in ridiculous way! Can I be saved by someone badly covered like Batman???
The only exception is for Superman. He himself is unlookable, but I agree with Bill that he is different from the others. I mean Bill’s theory in the Tarantino’s film Kill Bill:

“Bill: Superman stands alone. Superman did not become Superman, Superman was born Superman. When Superman wakes up in the morning, he is Superman. His alter ego is Clark Kent. His outfit with the big red S is the blanket he was wrapped in as a baby when the Kents found him. Those are his clothes. What Kent wears, the glasses the business suit, that’s the costume. That’s the costume Superman wears to blend in with us. Clark Kent is how Superman views us. And what are the characteristics of Clark Kent? He’s weak, unsure of himself… he’s a coward. Clark Kent is Superman’s critique on the whole human race, sort of like Beatrix Kiddo and Mrs. Tommy Plumpton.”