I neither want to waste my life in front of daytime TV nor do I have any desire to become "powerful" or rich. Your view of humanity is excessively pessimistic, most people do want to contribute something to society. There have been experiments with a basic income which does indicate that the vast majority still work despite having enough to survive and watch daytime TV if they so wish. The few who do not *want* to contribute something most likely aren't going to do a very good job so forcing them to work while those who do want to work have to stay at home does not seem very logical from a productivity standpoint.
The viewpoint that automation would negate the need for unions also doesn't make any sense. Why would automation make employers want to pay their employees more than the absolute minimum they can get away with? Unions are the reason we in Europe have the working conditions we do have, without them fighting for workers rights, 8 hour days and 5 week vacations would have never been realized as there would have been no counterpoint to the power of the very wealthy whose interests do not coincide with the average worker. The same is true in the future regardless of whether automation puts large parts of the population out of work, those who do work still need a counterweight to the capitalists who still do not have their interests at heart, but their own.