Cormac McCarthy's stories always hit me hard. They're so bleak, and happy endings are pretty much never guaranteed. I enjoyed this movie, but I have a hard time jumping into his other writing (and movie adaptations) because of how miserable/sad they are (Blood Meridian's ending really rubbed salt in my wounds - hear they're making a movie of that, too).
You can't argue that he's good at writing bad guys and flawed (human) characters, though, right?
RE: An Officer's Take: Thoughts on "No Country for Old Men", Chaos, and Human Resourcefulness.