Which has nothing to do with whether or not gold (or other commodities) have intrinsic value and serve the function of "store of wealth" where paper currencies do not. I'm not claiming one is superior or preferred to the other. The fact is that for developed economies, store of wealth is an unnecessary function. For that matter, money as a medium of exchange, such as physical currency, isn't that necessary either. I get paid and then pay most of my bills electronically, meaning no physical currency is necessary and "unit of exchange" is the only money function used.
Of course it's 100% absurd to say store of wealth is not important if true none of us would need paper currency or gold.
Paper currency is not a store of wealth. Metals and gems are, beads were commonly used as money during the slave trade period, cigarettes in prison...anything of transferable value or use independent of a particular currency. Paper currency, and modern coins of debased metals, have no value of themselves.
And I didn't say "not important," but "not necessary." My wife uses almost no cash, getting paid by direct deposit, and buying things with debit or credit card...no physical transfer necessary. Bitcoin is epitome of money as solely a unit of account.