Say good bye to the scourge that inflicts humanity,, Money.
Money is no scourge. It's a very handy medium of exchange. We would never have been able to advance nearly this far without it. Can you picture a modern world where everyone is paid for their work in pigs and shoes? You would then need to find someone with which to exchange all those shoes for food. Most of your time would be spent in trying to find people to exchange with - to get rid of what you have and try to get what you need. (Count me out of that one!)