Personally, I've always been dubious about the true value of gold in a major global depression. Although gold has it's industrial uses, it's main use is purely cosmetic, and in a major economic downturn people aren't buying jewelry. Human life requires food, water and shelter (and possibly personal security to protect those). I can understand a stockpile of oil, canned food, water - things that have a use - but not gold. Gold only has value while people continue to believe it does. You can't buy food using gold if the man with the food doesn't have a use for your gold.
Or, put it this way; if you knew there was a major economic disaster coming in 1 month and you currently have $50,000 cash, would you buy a $50,000 bar of gold in the hope that someone will trade with you when the time comes, or a shipping container with $50,000 of canned food that would last you for five years? Bear in mind that the food is a tradeable commodity, just like the gold, only the food has an inherent value that you can eat it and survive, whereas the gold is just heavy and yellow.