The downside of the utopia is the sheer amount of things that the robots can produce. Then what do you do with all that stuff?? That is a theme of the story "Midas Plague" by Frederik Pohl.
"The Midas Plague" (originally published in Galaxy in 1954). In this new world of cheap energy, robots are overproducing the commodities enjoyed by mankind. So now the "poor" are forced to spend their lives in frantic consumption, trying to keep up with the robots' extravagant production, so that the "rich" can live lives of simplicity. This story deals with the life of a man named Morey Fry, who marries a girl from a higher class. She is unused to a life of consumption and it wears at their marriage. Morey eventually hits on the idea of having the robots help him to consume his quotas. At first he fears punishment when he is discovered, but instead the Ration Board quickly implements his idea across the world."
"The Midas Plague" (originally published in Galaxy in 1954). In this new world of cheap energy, robots are overproducing the commodities enjoyed by mankind. So now the "poor" are forced to spend their lives in frantic consumption, trying to keep up with the robots' extravagant production, so that the "rich" can live lives of simplicity. This story deals with the life of a man named Morey Fry, who marries a girl from a higher class. She is unused to a life of consumption and it wears at their marriage. Morey eventually hits on the idea of having the robots help him to consume his quotas. At first he fears punishment when he is discovered, but instead the Ration Board quickly implements his idea across the world."
http://en.wikipedia.org/wiki/Midas_World