Some clues from the 'left-wing' Olduvai staircase tract which just fell apart, people swarming into the remaining 'right-wing' downsloaping part.
-gold as preserv of status/wealth of TPTB (banksters, .gov, nobility, church)
-silver for merchants and the ever shortening service class
-barter and old potatoes for the rest, i.e. 95-99% -ers class
The horrible thing about gold is the grandioze enviro destruction during mining, I guess there is a 2000s french documentary about some jungle mining outpost in South America, the detruction is just depicted, well by single word "complete" in all aspects human and natural. Now add Russia, South America, China etc..
Another freaky tidbit about gold, especially now, as it tends to float more between the vaults, each oz is a microcosm of its owner's history. Look at 'your' gold in hand, and try to look into and listen to that old mirror. Chances are you 'own' part of someone tooth from the WWII era, some Roman bloody loot of ancient ME, plus bit of melted sacrificial sculpture from Aztecs or Inkas, .. everything poured there into a single piece. It's like a teardrop of concentrated -
Well, it's understood that this might be also the perverse reason, why so many people in fact 'dig' the whole gold mantra in fact on some deeperlevel anyway.
Perhaps the Olduvai wet slope will push us ultimatively beyond this civilization crap, i.e. before ~10-15k BC timestamp mark, voila no problemo as metals not massively horded anymore.