Here's an interesting soundbite provided by @Glinner, in which the legendary Alan Moore pinpoints a huge problem with comic/graphic novel writing. He simultaneously therefore alludes to why his own continuous toying with anti-hero characters has cast him as the greatest of writers, certainly within my lifetime. (Bob Kane, I never knew thee; Frank Miller, apologies; Stan Lee - too many cameos.)
I do still only dabble in graphic novels; aside from a lifelong Batman fascination, it is short series of original characters, in which Moore specialises, that I find the most interest. Long may he continue to create unfilmable wonders.