May I postulate number 5?
5. The first thing we do is kill all lawyers.
See, the world today sucks. It may suck more or less than it used to, but it does suck. When, historically, didn't it suck? During wars.
Yeah, sure, there was always the chance of getting bitten or blown apart or crushed; but that's there every day. Perhaps not as much, but it's still there.
Yeah, and also there's less stuff. But that's a good thing sometimes. If you're stressing about the exam coming up tomorrow, then the apocalypse will sort that out. Worried between buying games on the Xbox or PS3? Don't. You can't during an Apocalypse.
Your life is one long workday of running from one safe house to the other, but guess what? That's all it is. Gone are the worries of whether Alfie really loves Peggy, what you're going to have for dinner, whether Fox were right to cancel Firefly. And that guy down the street who winked at your girlfriend? He's alongside you blowing holes in the undead. And her. But she's a zombie. And her mother never did like you.
It's a simple, less brutal life. Living on the edge, safe in the knowledge that you're not only the counter culture, but the culture itself.
And anyway, Zombies are pansies. Not as bad as Triffids or something really scary.