I say to all comic book fans stop hating on DC for using batman more than other characters. I am guilty of this to, but I have learned the error of my ways. DC has tried to put forth other characters some are successful(Aquaman) some aren't(Demon Knights, Legion of Superheroes). DC has tried multiple times to put other characters to use in Tv shows, movies, and comics. DC tried to give GL his own movie, but it failed. DC keeps putting out comics about lesser known characters, but we don't buy them.
You know what we do buy? yep you guessed it, Batman. That's why we see him all the time because he is popular. Batman is DC's most popular character right now, maybe with time some less popular characters will take the mantle like the Flash or Green Lantern, similar to how batman took it from superman in the 80's. But, as of now we just have to deal with it.