Right. Plus there's the problem that as presented now, the characters have no hope. At the current rate of attrition, we can't reasonably expect that anyone on this show will be alive after a few more seasons. They have no real goal other than "find someplace safe", and the show goes out of its way to depict nowhere as being safe. Will there be no other point to the show than that?
I like the show quite a bit, but I'll be disappointed if ultimately it's about nothing more than "Life's a bitch. Then you die. Then you reanimate."
BSG appeared equally hopeless, but it actually did go somewhere (whether people agree with that destination or not). So it's still possible for TWD to do the same. I just hope they do.