I've never understood Americans' obsession with superhero comics. When I was a kid I was reading Asterix[1], Gaston Lagaffe[2], Spirou et Fantasio[3], Lucky Luke[4], Prince Valiant[5], The Phantom[6] and similar stuff. Of course, I've read Superman, Batman and Spiderman also but at least I've had a choice. I can't understand why they don't exist in US, why are the only comic books Americans know superhero comics? [1]…
"Although the creation of the superhero was the Golden Age's most significant contribution to pop culture, many genres appeared on the newsstands, including humor, Western, romance, and jungle stories. The Steranko History of Comics 2 notes that it was the non-superhero characters of Dell Comics — most notably the licensed Walt Disney animated character comics — that outsold all the supermen of the day. Dell Comics, featuring such licensed movie and literary properties as Mickey Mouse, Donald Duck, Roy Rogers, and Tarzan, boasted circulations of over two million copies a month, and Donald Duck writer-artist Carl Barks is considered one of the era's major talents."
http://en.wikipedia.org/wiki/Golden_Age_of_Comic_Books
There are also Wikipedia pages for Western and Romance comics.
So there used to be other kinds of comics in the U.S. As mentioned elsewhere in this discussion, the Comics Code Authority seems to have marked the end of non-superhero comics.