Gold has always been a bubble. I'll never understand why people seem to fetishise it as the substance that is the basis for all value everywhere. I mean, I understand the history and all that, but it's not the greatest currency ever. Now that we aren't on the gold standard any more we should be trading it based on it's use value, but it's exchange value has very little to do with it's use value. People seem to think that when the zombie apocalypse happens gold will be the only thing worth having, rather than, say, weapons or clean drinking water.
That said, in the event of a horrible apocalypse style disaster gold seems more stable than bitcoin to me (although potable water would be better than gold or bitcoins). Bitcoin is only usable if you have the internet, right? I mean, there is no physical Bitcoin protocol like the IP over avian carriers protocol, right?
(AKA RFC 2549) In an apocalyptic breakdown of society the infrastructure will be one of the first modern conveniences to crumble. Bitcoin seems ideal for protection from financial sector meltdowns and protecting you from statist thievery like what is happening on Cyprus, but not for serious breakdowns like, "shit, my government is harboring Bin Laden, we're about to get bombed into the stone age!"
Gold was money pre-electronics because it has great properties as a unit of exchange/account in such an environment (all the "ideal money" stuff; eg, durable, scarce, recognizable, divisible, fungible, etc). And even until 2009, nothing existed that bested those properties of gold. It's just that in the electronic era, humans developed a strong need to transact at a distance, so we developed surrogates acting on top of gold (eg, representatively pegged to gold) that were exchanged in its stead. All's well so long as the peg is preserved (else you can lose the "scarce" quality).
Turns out humans like to mess with the peg because changing it can generate short-term wealth (and votes). So the peg ultimately has to go, and we end up with a grand experiment in pure global fiat in the vacuum left by gold. Interesting times.
Nothing that has gold's properties while providing transactional utility in the modern world existed between 1971 (gold un-peg) and 2009, and look what happened... Global debt of completely unprecedented proportions. Now that we have the ideal solution for modern times, it will be interesting to see to what degree it can unseat the fiat surrogates that are currently in use as money.
No matter what, bitcoin is almost completely a monetary superset of gold (eg, gold has few good properties that bitcoin doesn't, but bitcoin has many good properties that gold lacks).
So gold eventually melts into bitcoin.