Your aside is an extraordinarily large aside and yet you casually toss it in there.

Humans have a nearly unlimited desire for luxury goods and always will, quite predictably. They lust after jewelry accordingly and have for many thousands of years. Nothing about that will change. The aesthetic demand for gold will remain so long as people continue to desire luxury goods.

If you drop the price of gold low enough, people will start rampantly decorating their walls and consumer goods with it. It has potent intrinsic support under the price, as much as anything can. It will remain scarce and desirable.