Why do you think that is, honestly? Almost every other medium - movies, books, stage, music - has a pretty equal balance between the popularity of their different genres, but comics are so overwhelmed by just one. Probably 85% of the market deals with typical superhoeres, and alot of the other 15% is something else that is fantasy but not superheros. They exploded in the late 30s and 40s, and there was a brief time in the late 40s and 50s where War, Romance, Western, and Horror comics dominated, but that's pretty much it. I've always figured that the reason stories in the fantasy genre (which superheroes are a sub division of) controlled the industry was that the medium can do it so cost effectively. It takes the same effort to draw 22 pages of two people talking as it does to draw 22 pages of spaceships dueling and planets exploding, so why not? But then, why almost all the time? Movies were always limited by their budgets, and still are, although not as much as they used to be. But couldn't the same be said for books? Books aren't restricted by budget either, and we see a far amount of fantasy in that medium, but it didn't conquer it. Out of curiosity, as a comics reader, how likely are you to read a comic with no superheroes in it, or one with no fantasy elements in it? Probably not very likely. Even the best read of us here only do so occassionally, or in small proportion to the fantasy books we read. Although, admittedly, limited availability of non-fantasy stories likely factors into that. But then compare that to the movies you see. Do you ONLY go out to see crazy action/sci-fi/horror movies like Independence Day, Mission Impossible, Lord of the Rings, The MAtrix, Jurrassic Park, Star Wars, or any of the comic adaptations? No, in all likelyhood, you also see films like Million Dollar Baby, My Big Fat Greek Wedding, Saving Private Ryan, Wedding Crashers, Gone with the Wind, American Beauty, Casablanca, etc., don't you? So how come the tastes of the general COMIC reading public isn't as varied as the movie or book industry?