>What if who you're attempting to do business with doesn't have the ability or desire to use it Then they can use their Zimbabwe dollars or whatnot until their fiat goes to zero. >How are you going to be able to turn it to another currency if banks no longer facilitate that Remember that bitcoin had on and offramps long before any bank got involved. >When everything becomes a cbdc and the central banks refuse to interact with Bitcoin then the ability to exchange becomes nil. At that point fiat's value will be effectively zero. They're welcome to see how much food their worthless fiat buys. >How would one buy in after that? Create a wallet, offer to sell your buddy a crate of ammo for X sats, exchange sats for ammo.