Kaboom, pew pew kaboom pshaaawwww pew pew pew! That's what I did once when I was a kid and my parents brought me to see an action movie. .-.
But Captain America is cute! And Iron Man has a metal suit that talks! And the Hulk goes AAAAAAARRRRRRRGGGGGGG GGGGGRRRRRRRRRRR!!!!! And that one guy has a bow and arrows (and is cute, too. Shhhhhhhhhhh.). And the other lady... Actually, she didn't have anything special.
e.e I'm 90 percent certain Black Widow was there for female sex appeal so more guys would want to watch the movie.-.