Neither does gold (it's just a yellow metallic rock), diamonds (really hard rock) or printed paper bills. Currency has value only because a lot of people agree that it does. For reference, see the Fallout and Metro video game franchises. In there, paper money doesn't mean jack squat after a nuclear armaggedon, and everyone decided that the new currency would be , respectively, soft drink bottle caps and military-grade, never spent rounds.

Second,know what else is used by every single international criminal organization of every type ? Dollars. I don't think he's gonna get rid of all he has because of it.