Gold has the chemical property of being very stable, doesn't tarnish or oxidize. Its rarity is what gave it value through millennia. We could agree that sand is valuable and choose it as a currency if we want. I don't agree when you said gold has no real use. It does have real use.
When economies collapse, computers crash, paper money burn, what do you think people could use to buy goods? Gold and silver coins 😉
RE: Gold Is Useless