"If there's one thing we all understand about zombie killing, it’s that the act is uncomplicated: you blast one in the brain from point-blank range (preferably with a shotgun). That’s Step 1. Step 2 is doing the same thing to the next zombie that takes its place. Step 3 is identical to Step 2, and Step 4 isn’t any different from Step 3. Repeat this process until (a) you perish, or (b) you run out of zombies. That’s really the only viable strategy.
Every zombie war is a war of attrition. It’s always a numbers game. And it’s more repetitive than complex. In other words, zombie killing is philosophically similar to reading and deleting 400 work e-mails on a Monday morning or filling out paperwork that only generates more paperwork, or following Twitter gossip out of obligation, or performing tedious tasks in which the only true risk is being consumed by the avalanche. The principal downside to any zombie attack is that the zombies will never stop coming; the principal downside to life is that you will be never be finished with whatever it is you do."
From Chuck Klosterman's great article titled "My Zombie, Myself: How Modern Life Feels Rather Undead"