Ok, I found what I wrote in January when I first read it:
Hm. Well, it was a fast read and, in most places, a page-turner. I'm glad enough I read it, but didn't like it much. Some of it made me think, but more in terms of being glad that's not my own world view - all that decline, and inexorability, and no humanity. I didn't find it particularly upsetting, I just found it hard to care because McCarthy has so little interest in character. I think I like books by people who like people, and I suspect he doesn't, all that much.
I also found it a little too movie-like for me. It was so very visual, like you could see each scene as though it was on film. So far as the character development went, maybe still waters run deep and I just wasn't seeing it, but they seemed more like cinema archetypes to me than fully formed people - you know, the silent feared killer, the small town peace officer with the hint of something in their background from the war, that kind of thing.
It's interesting to hear from someone who liked it though - obviously it got very good reviews indeed, and I was curious about what people see in it. In some ways, I was more interested in reading the reviews after than in reading the book itself at the time!