Consumers and Producers

How could we be merely consumers? There has to be someone or something to provide for us. If people lived in the utopian vision, there would have to be some who did not. This would cause an even bigger rift between the classes. The lower classes would be lower because they would have to do everything, while the wealthy does nothing. If everyone does work, then there is less of a rift, and the classes are more equal. We all must produce and we all must consume. We cannot healthily do just one or the other.