Unless the Earth gets hit by an asteroid or some other extinction event, gold and silver will retain value because it has been doing so for 5000 years or so. It is ingrained in the psyche of 1st worlders as well as 4th worlders. Remember, almost all SHTF scenarios are short term, especially financial/currency at the macro level ones. So, while it's absolutely essential that you have some store of, well, essentials like food, water, TP, etc., the situation where those are in short supply will always be "short" term. However, if you have all your financial wealth denominated in terms of a fiat currency, when that fails, you no longer have a nest egg. Period. If, on the other hand, you have 5-10% of your financial as gold+silver, when we get to the other side of the SHTF, at least 5-10% of your former financial wealth will still be intact. If you don't, you're broke. Simple as that.