It's a life style.
Personally, I can't stand 99% of the zombie stories. I thought The Walking Dead was dreadfully boring I couldn't make it through the first season. Most of the other takes on zombies are just silly and I never thought there was much to them as far as monsters. So I had to make one.
Keep in mind this was a one take production and I encouraged the performers to improv. No edits, no changes, this is as we shot it. I originally learned how to direct multi-camera productions so it was easy to get into the feel of it again.