Interestingly, that was my biggest objection with this one, too. I didn't like either of the two main protagonists as people at all. Which felt like a pretty huge failing when I consider how much I'm able to like The Penguin, Walter White, or just about any TV/movie antihero. I found myself liking the daughter and husband much more than either of the two people the film was really about.
There were a lot of strengths, but all in all this one was pretty middling for me. A great review, though!