[bb88]

I can exchange dollars for either other dollars or gold. Neither of which necessarily need the goodness (or greed) of society to constantly care and feed it.

Banks existed long before the internet did, and in a post-apocalyptic crunch we could always go back.

[russianbandit]

In post-apocalyptic crunch we are likely to go back to food, water and ammo. You and I will likely be long dead before society reverts to something like gold, so I doubt gold as post-apocalyptic hedge.