There is also a meta discussion here on liquidity (how easy it is to exchange something). People want currency because it is easy to exchange. Your landlord might be okay with getting paid in a mix of gallons of milk and some cuts of beef, but most will not. Trading for “non currency value” is not uncommon. You might get paid with stocks depending on your work. If you buy a car you might trade in your old one.
There is also a meta discussion here on liquidity (how easy it is to exchange something). People want currency because it is easy to exchange. Your landlord might be okay with getting paid in a mix of gallons of milk and some cuts of beef, but most will not. Trading for “non currency value” is not uncommon. You might get paid with stocks depending on your work. If you buy a car you might trade in your old one.