I haven't seen it but from what I've read, "The Walking Dead" deals with the aftermath of a zombie apocalypse and is classified as in the horror genre. My tastes when it comes to secular entertainment fall into the realm of the real (or at least plausible). Special effects, monsters, space creatures and robots have never interested me. I tend toward entertainment that's either dialog-driven or has rich character development, ideally both.
For some reason, my DNA is wired such that science fiction, horror and fantasy just don't strike me as fascinating. I am quite possibly the only person on the planet who has never seen a nanosecond of either "Star Wars" or "Star Trek". I've heard great things about both the film as well as the television series and I like William Shatner's acting going back to "Judgment at Nuremberg" but have never invested the time to view either of those iconic parts of our pop culture.
Tastes vary and in my wheelhouse for musical enjoyment are hard-core traditional country (Roy Acuff, Ernest Tubb, Webb Pierce and so on) as well as Southern Gospel (Happy Goodman Family, The Kingsmen, Florida Boys and the like). I've never acquired a taste for rock of any sort from the old R&B of the 50s to the Beatles, Led Zeppelin, etc. Clearly, although I'm something of a square, I don't consider all rock music to be sinful, it just doesn't appeal to me.
And unlike President George H. Bush, I do like broccoli! :)
Don’t believe everything you read. ;-) The Walking Dead (TWD) does not belong to the horror genre, nor is it science fiction. Yes, it has a fair amount of violence, but the character development is exceptional, as is the acting.
What gives it some spice is the examination of how people can be torn between survival and doing what is right; how small groups organize themselves in the complete absence of a central government or authority; the potentially corrupting effect of violence; how people can deal not only with the death of a loved one, but that loved one immediately transforming into a deadly enemy.
Regarding plausibility, with the way the country and the world is going, unfortunately, except for the last bit and of course the absence of zombies, I think the rest is entirely plausible - one reason I find it so fascinating. In the series, zombies in fact are quite easy to defend against and are not the real danger - other humans are.
Give it a trial viewing sometime!