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.
Don’t forget “skills you can use to make yourself valuable to a small community”, especially the skills to grow and prepare food, locate and purify water, construct and maintain shelter, maintain and upscale off-grid power, and use ammunition and weapons.