I likewise bailed. The lost interest point to me was when the writers had every single character get to the point that they had to make a decision, share information, or otherwise not endanger themselves and everyone around them - they had them choose the stupidest option that presented itself.
Particularly infuriating to me was the weakest-ass of all "plot points" - the cliche of someone having information that could be crucial to survival of the group and instead of immediately sharing it (which would be the only logical thing to do) they instead decide to keep it a secret. Thus endangering everyone around them as well as themselves. As soon as I see writers pull that one - I'm usually out of there.
And "junkie depp" certainly didn't help things going from what he knows how dangerous the Z's can be, to wanting to be part of them? Even a freaking meth-head or oxy-addict isn't that stupid!