It's called bartering.
Idiot.
Bring me enough gold and I will give you a Buick Regal that puts both tire in the at the race track.
Only because the car dealer knows he can exchange it for cash dumbass.
Gold has a value placed on it by how much cash you can exchange it for, without an exchange for cash it may as well be a lump of shit.
People hoard gold in case the market crashes and cash drops in value.
Gold still has to be exchanged for cash at some point.