Looks to me like the last three episodes (aka Hannah going psycho) overshadow what was otherwise a good season of television. Certainly not up to S1 in quality, I feel like this season really missed a central storyline, like the Adam&Hannah realtionship in season 1.
In Season 2, the lives of the four girls +adam never really intervened, with everyone breaking away from each other midway though the season, and stumbling into another persons live for an episode or two. This made the whole series feel really episodic, and while some of these episodes were interesting ("Boys", "Bad Friend"), the season as whole just didn´t work. Having a chamber play and a road trip episode in one season didn´t help, and it broke up the season into three parts. (1-4,5-7,8-10)
Sadly, episodes 8-10 are a mess. Hannahs OCD could have been interesting, if those episodes were actually about her. But for the last three weeks Hannah storyline was the least compelling. I was actually surprised to see her from time to time, in a way of "Oh you´re still here? Still ocd? Alright, back to shosh and marnie." Even though I´m sure there was a lot of screen time given to her story.
Oh and last night´s finale was stupid.
I´ll stick around for season three. Let´s see Hannah and Adam being happy for a few episodes, before dragging each other down and eventually splitting up again.
But I´m sure there wouldn´t have been this kind of backlash if S2 had ended on episode 5 or 7