I know people out there who have invested a lot in gold under the belief that in the event of like complete societal collapse or hyperinflation, they could use it for purchasing.
I have the hunch it’s a scam, but I haven’t learned enough monetary theory, business, or economics to understand why.
Generally speaking, precious metal commodities are a hedge investment; they aren’t a primary investment themselves, but they’re a hedge against a loss in value of other investments, like stocks or bonds. If you are investing in gold as a hedge against inflation wiping out stock market gains, then yeah, it’s pretty solid. You probably don’t want to hold on to it forever though; if you’d bought gold just prior to Carter taking office and the stagflation of the late 70s, you be pretty much break-even with things like index funds.
As far as total societal collapse, you would need to have the physical bullion, not just have precious metals in your investment portfolio. And even then, gold might not have a ton of value in a subsistence society. People might trade for it, but if I had food to trade, I don’t think I’d be trading for gold, since I can’t eat gold. The people that will clean up in a subsistence environment? The Amish.