But it is. You need those resources and a way to predictably obtain them. The system of currency is the only known way to achieve this, especially in our modern

But it is. You need those resources and a way to predictably obtain them. The system of currency is the only known way to achieve this, especially in our modern society. Previously, it may have been possible for a large number of individuals to live an agricultural lifestyle where they produced almost all of the resources they required. That would be impossible today, unless the world population (fractal distribution generally applies to smaller geographical divisions) were reduced to less than 1% of its current size. The other downsides of such a scenario are also easy to imagine, I am sure.