I've seen every episode. What is continually frustrating to me is I feel there are too many loose ends at this point and that they keep introducing more elements. I understand this from the perspective of prolonging the story and creating more episodes, but from a viewer standpoint, there needs to be a more satisfactory element to the show that things are answered.
Either way, I still enjoy it, but feel that if they keep introducing more and more things without tieing up what has already been presented, they may start to lose viewers.