Have you? Currency is just an abstraction layer over "stuff". Land, buildings, cars, food, whatever. If some other country has a bigger, meaner military and c

Have you? Currency is just an abstraction layer over "stuff". Land, buildings, cars, food, whatever. If some other country has a bigger, meaner military and can roll over you and take your stuff, it doesn't really matter how many virtual coins you have. Your coins are only worth what they can buy, and buying something is meaningless if you can't defend it. The military and by extension the military industry aren't going away unless we end up in a truly magical post-scarcity society where nobody has a reason to take stuff from anybody else, because they can get anything they desire materialized out of thin air for free. Which would also eliminate the purpose of having currencies.