That's what we wanted to get across in that moment, particularly when Shaun goes to the shop when he's all hung over. He doesn't notice any of the zombies around him just because he never had before, so why should he at that point? ↗
I sympathize with the zombies and am not even sure they are villains. To me they are this earth-changing thing. God or the devil changed the rules, and dead people are not staying dead. ↗
My zombies will never take over the world because I need the humans. The humans are the ones I dislike the most, and they're where the trouble really lies. ↗