Except the show isn't really about Zombies as much as it is about post-apocalyptic survival. To this point they haven't been (actively) looking for a cure or trying to see who/what is behind the virus. While Zombie's are the core of the show, the plot is about survival and how people live and react when governments and societies fall. The great thing about a show like this is that you don't have to have a complex center plot that you have to write around. And it's also a huge advantage that its based off a comic book, so they have plenty of material to use in writing the show.
Also, post-apocalyptic movies tend to do pretty well in theaters and pretty much never go out of style with audiences. Walking Dead isn't going anywhere any time soon b/c the writing and acting a million times better than 90% of the shows on TV.
Also, post-apocalyptic movies tend to do pretty well in theaters and pretty much never go out of style with audiences. Walking Dead isn't going anywhere any time soon b/c the writing and acting a million times better than 90% of the shows on TV.