What I mean is, the characters haven't been dealt the "endgame" card yet. Things seemed relatively good for Dexter and Deb (at least before Hannah's return at the end), like they were pulling out of a their darkest hour. Things will never be the same again but they're trying to move forward...but as an audience we're in on something they're not. That things ARE going to get bad again, because of the mere fact that there are 6 episodes left. There is no drama without conflict. It's like a false ending in a movie before it goes into the Act 3 climax. That steaks and beer scene is very telling. They're trying to go back to normal, but something if off. It's the calm before the storm.