Central Banks will create legal and regulated digital currency. But actual cash will never go away. Gold will never go away. People are clamoring for currency backed by gold and you think digital currency that is converted by injecting printed cash into it is some wonderful solution? Digital currency? We are already using it. If you deposit your real cash into Bitcoin to convert it to Bitcoin, I gotta tell you, that is not digital currency. That is some bizarre world. Nothing will be built on top of Bitcoin. Go talk to these Bitcoin millionaires and see if they can even take the money out. They can't. It will on spur on scams and illegal activities in an attempt to at least cash some of that Bitcoin out they amassed by themselves and others putting real central bank printed cash into Bitcoin world. Take a bit step back and look at the Bitcoin world. It is downright PATHETIC!!!