A bartering system is a good or service for a good or service. It assumes that you're trading for something that is immediately useful. Printed money can be saved for a long period of time. Money sitting in a bank is not useful or beneficial. This leads to greed, and social class divisions. In a bartering system, these issues do not exist.
It would encourage people to grow their own food so they would have something to trade. It would result in a healthier community.