I've met a lot of people that adored season 2, just like you do, and I understand why. And when I say the season was "bad," I'm being a bit hyperbolic, because it wasn't bad so much as it was... blah. Thing is, when you dial the post-apocalyptic nature of the show down to 1, it just becomes a set piece for the drama. It becomes more of a soap opera than a series about survivors of the zombie apocalypse.
It's like that movie that came out last year, Another Earth; the movie is touted as this scifi spectical where another identical earth is found within the solar system. But then, the entire movie is about these two people and their emotional problems, and the whole "other earth" thing just becomes a set piece that doesn't even matter in the context of the story that's being told. The setting literally could have been anything else, and it wouldn't have affected the story.
The reason I like zombies is because they're human, but not quite. They allow for the inner, deepest fears and desires of the survivors to come boiling to the surface in a world that no longer makes sense. Zombies aren't predators in the traditional sense, they're the feral and animal part of the human condition that's buried beneath millennia of self-imposed civility, intelligence, and restraint.
Anyway, that's how I feel about the majority of season 2 (and more, I guess lol). Just my thoughts.