Currency only works when everyone believes it does.
Electronic payment and automation have drastically altered our relationships with money and with work. Currencies—much like their counterparts in games such as Second Life—are now virtual, along with many of the working-parts in the supply chains and products for which they pay. Those individuals at the top of this decreasingly human chain benefit hugely from the universally accepted value of these currencies, while those at the bottom are squeezed.
Paradoxically, crypto-currencies are perhaps more real than their established counterparts, as their value is dictated by scarcity [albeit artificial], rather than being set by central banks.
This is not to say that modern currency has no use or need not be respected; however, we must sometimes step out of ourselves in order to question how, and if, the established systems still apply.
Jack Wild, 2018