It is a Coen brothers movie . . . to say that doesn't come with expectations is sort of absurd. To say that you can go in without any prejudice about what a Coen brothers movie should be is equally absurd. Once you know something you can't just voluntarily unknow it. Expecting certain things from the Coen brothers is just as valid as expecting certain things from Michael Bay. And they both tend to live up to expectations with about the same consistency.
And I understand that it was a book adaptation, but it was not as good as most of their other work (including No Country for Old Men, another book adaptation). I don't really care why it wasn't as good as the others--whether it was because it was an adaptation of an inferior work or because they phoned it in or because they ran out of money. I just care that it wasn't as good, for whatever reason. With that said, the movie was still really good. I liked it a lot. I just don't really want to see it again.