Interesting article in the NYT: For iRobot, the Future Is Getting Closer. However, it doesn't speak of the ultimate question.
Once all jobs are performed by robots, and once capitalism and anti-taxes lobbies made the robot producers rich and all others left with nothing, how will we live? Ideally, in a fully robotic society, humans will be free from physical labour but that means they get valued (and paid) differently. For example, money is redistributed simply so that people consume... the very fact people consume will keep pushing for competition. The consumer is then valued and paid as a selector. Financial markets are often justified as capital-allocation tools. Consumers should be valued as capital-allocation tools too! Ultimately they're the ones deciding the winners and losers of market competition.