[The science behind superheroes][1] might shed some light on this topic. Just to wet your appetite and encourage reading that article here are some quotes:

> We've all heard it before: a scientist, working in a secret laboratory buried deep in the heart of an extinct volcano, suffers an unfortunate mishap and is doused in radioactive chemicals/gamma rays/mutagenic DNA. Next thing you know, he is transformed into a crime-fighting guardian of justice.

> Oddly, the physical appearance of these accident-prone super-brains is always the polar opposite of a stereotypical scientist - extraordinarily buffed and good looking even before their transformations - leading to malicious speculation about why these fit, handsome, intelligent people aren't out clubbing with all the other chick magnets.

(....)

> The first superhero stories, led by Superman himself in Amazing Stories #1, published in 1938, were originally an offshoot of the pulp-fiction magazines and comic strips popular throughout the 1930s. These were stories of adventure, heroism, strange worlds and magical powers - whether it was Flash Gordon battling Ming the Merciless on the planet Mungo, or Conan the Barbarian wrestling dark demons in forgotten temples.

> The 1930s was a time when the Great Depression gripped the globe, and this had a particularly poignant effect on the people of the United States. The country that had promised the great American dream was now a land of unemployment, poverty, suffering and a failing free-market economy. People needed heroes, and newspaper comic strips and pulp-fiction magazines provided them in spades.


  [1]: http://www.cosmosmagazine.com/features/print/3137/the-science-behind-superheroes