The whole "Lord of the Flies" angle is pretty much ingrained into any post-apocalyptic story, but if that's all they have going for them then I think they grow tiring pretty quickly. The best post-apocalyptic stuff tends to have societies that the viewers can see are worth protecting and saving because despite the harshness of the world there's a core of good to them... they represent safety and possibility for the return of society. However, when it's just lone good people in a crappy world being hunted and persecuted by the worst of humanity that now reigns supreme then I begin to question what the point is to their existence, and why I really want to watch them suffer constantly.