Guns, ammo, and food I get, if you're preparing for economic collapse. Gold and Silver hoarding is a mystery to me because you can't eat it, drink it,wear it, use it for self defense, or build a shelter out of it.
Gold and silver have been used as currency and payment for goods and services for millennia and are a storage of wealth. In a SHTF scenario where the economy collapses and people no longer find value in paper currency gold and silver will be used as methods of barter and storage of wealth. Gold will mainly be used as the storage of wealth and payment of large ticket items where as silver will be used for smaller purchases and day to day needs.