As long as there is free-market capitalism, there will be jobs. Precisely because we will think of new ones.
Take away or erode free-market capitalism, all bets are off. Even without robots.
Not necessarily. When automation is cheaper and can do pretty much anything there’s not much reason for jobs. Technology is a force multiplier, and between automation and printers we just might be multiplying our forces to the point we just don’t need most people to have jobs.