This is an important and increasingly pressing question. On one level, you can ask 'what will we do with ourselves' - that is, to give our lives a sense of purpose and so on. To me that's easy - we already know how people like to entertain or amuse themselves, and beyond simple consumption and hedonism it's also obvious that people are happy to do some kinds of work for self-fulfilment rather than efficiency - eg gardening when you could just buy food or flowers from a farm, washing dishes even though you could get a dishwasher, painting for pleasure even though you could take a photograph and/or have the image printed or repainted on canvas. In short, I don't worry about how we'll occupy our time.

But I do worry about the question of how people make a living in these conditions. It's not enough to say 'basic income' because absent a massive economic shift most robots are going to be privately owned, and the owners of such capital will ask why they should donate a large volume of their profit to support non-productive individuals. Put another way, I'm not sure that the arrival of technological abundance will necessarily be accompanied by optimal social structures in the short term. A sudden and drastic acceleration in social stratification followed by unrest sems to be a far more common pattern. A luddite backlash is also a possibility, and a stronger one than usual given the factor of AI, which some people seem to have an atavistic fear of.