For those that never read the comic, it's not a zombie story. It's a post-apocalyptic story. The zombies have very little to do with the day to day events that happen to the survivors. The comic is a bit contrived in the first few volumes, but gets more realistic later on. One thing I like about Kirkman, the writer, is that he's never afraid to kill off his chars, even if people love them. People will die left and right with little buildup, making the world more depressing.