It's a bit more involved than just Alan Moore didn't want to have anything to do with it.
After the utter travesty that was league of Extrodinary gentlemen, he was finished with any adaptations of his works. He didn't try to stop watchmen from being made, he just wanted nothing to do with it, giving Dave gibbons (the artist of the book for those that don't read comics) full ownership of the movie rights. Just as he did with the artist for V for vendetta.
Alan Moore is a bit of a recluse, as in Howard Hughes level of recluse. But one of the greatest pure anarchic writers of all time.
He just hates the business now, both movie and comics, especially DC comics now they fucked him on the whole before watchmen (which the print rights to the book were going to revert back to Moore and gibbons if DC didn't print new stories featuring the characters).
After the utter travesty that was league of Extrodinary gentlemen, he was finished with any adaptations of his works. He didn't try to stop watchmen from being made, he just wanted nothing to do with it, giving Dave gibbons (the artist of the book for those that don't read comics) full ownership of the movie rights. Just as he did with the artist for V for vendetta.
Alan Moore is a bit of a recluse, as in Howard Hughes level of recluse. But one of the greatest pure anarchic writers of all time.
He just hates the business now, both movie and comics, especially DC comics now they fucked him on the whole before watchmen (which the print rights to the book were going to revert back to Moore and gibbons if DC didn't print new stories featuring the characters).