For anyone downvoting this I'll expand what he said so you can understand it before reflex downvoting.
Nationstate backed fiat currencies require enormous amounts of energy waste in the form of standing armies and other tools of power. Compared to the energy Bitcoin uses to protect itself from attack or fraud this energy is very large.
Nationstate backed fiat currencies require enormous amounts of energy waste in the form of standing armies and other tools of power. Compared to the energy Bitcoin uses to protect itself from attack or fraud this energy is very large.