I know an investment banker who converted all his net worth into gold at the beginning of 2007 just before everything tanked.
Gold is a popular investment today. It is even possible to invest in gold via your retirement fund.
Many claim that gold is a protection against inflation. If you hold paper currency there is the risk that the central bank can print more paper currency, which decreases the value of each unit of the paper currency.
However, couldn't the same thing happen with gold? Gold is mined around the world by gold miners. Over the last two centuries there has been a steady increase in the amount of gold produced.
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Because there is so much uncertainty about how much gold there is still beneath the earth and because there is so much uncertainty about where gold is stored, then the actual quantity of gold in the economy is very uncertain. Because of this uncertainty, the purchasing power of gold must fluctuate greatly, which destroys one of the most important functions of a currency, which is providing a stable store of value.