The show is a collection of parables, and as such, the societies it portrays are exaggerated portraits of a certain societal trait. It's possible that some viewers will feel as if they're being beaten over the head with the moral on some of the episodes. As for me, I thought that it was refreshingly straightforward, and had no problem accepting it for what it was: a story.
Although the show is frequently dark, exploring the depths of mankind's ruthlessness and stupidity, there was a core of hope to the show. A message that, looking out at the world around us, and looking in at human resilience in even the worst of societies, you can't help but have hope for the world.
Excluding the few actiony episodes, the show generally keeps a slow, contemplative tone, and a pace to match it. I imagine that this will lose some people who are looking for something faster and with more bang.
This show is one of my favorites, and stands out as an incredible testament to the power of the medium.
