if there is one thing Hollywood is consistent about is its ability to do so little with so much.
Therein lies the problem with adaptations. Novels and films are two very different mediums. Most adaptations are bound by telling a 500 page story in two hours. It's difficult to manage, and often fails to impress fans of the novel because so much must be left out.
Once in a while, a filmmaker is given more leeway, and they can create something like "The Lord of the Rings," or the miniseries of "Roots" or "The Stand." "The Green Mile" was a terrific adaptation, but it clocked in at over three hours long. Sometimes you find a genius like Brian Helgeland who can take a 900 page book like "LA Confidential" and trim it into a tight, classy 2.5 hour film. Maybe it isn't the most faithfully adapted screenplay ever (dozens of characters and tangential storylines had to be cut), but it works. It tells the essence of the story.
And just because audiences love an adaptation, doesn't mean the author will. Didn't Stephen King hate Kubrick's version of "The Shining?"
If someone wanted to adapt and film one of my novels, I would be all for it. I love film as an art form, and it would be fascinating to see how Hollywood would cast it and interpret my worlds. Maybe I would be happy, maybe I would hate it. I'd love to find out.