1) We’re Stronger Together.
While it would be difficult, I believe it’s entirely possible that a person could survive a zombie apocalypse alone.
That said, it would be a hell of a lot easier if you had other people with you.
The reason for this isn’t necessarily anything deep or profound about the human condition or any such nonsense, but the simple fact that, alone, you’re vulnerable to attack in the times and places where you can’t see the enemy coming: Behind you and when you’re sleeping. You can’t see what’s directly behind you, and you can’t see what’s going on around you while you sleep. In either case, you could get ambushed by zombies and not even have a chance to defend yourself before you were bitten.
If you have even one person with you, they can be your extra set of eyes in these circumstances, and you can be theirs—shared survival: The basic building block of any good symbiotic relationship.
However, this requires one crucial element: TRUST.
How can you expect a person to protect you at your most vulnerable when you can’t trust them?
If you think that the other person might just as soon slit your throat in your sleep as to help you, you can’t co-exist with them in the apocalypse. It’s simply impossible.
In my lead-in to this entry, I asked: Who needs trust? Well, I have the answer to that question: You do.