Why does society owe you the preservation of your purchasing power?
Why should you get to time-travel your wealth without taking any risks?
Gold: Volatility/Security/vault costs
Pure cash: Inflation
Banks: counterparty risk
Bitcoin: Volatility/private key risk
Land: Security/environmental risks
Stocks: Corporate/economic/volatility risk
EG, farmland may be a good SoV if your physical safety in the event of a war.
Gold may be a SoV during a monetary collapse.