If people don't work what will stimulate them?
We are not talking about horses, trains, assembly lines, etc ... We are talking about intelligent robots with advanced technology that learn quickly without limit in the end.
The future role for money, taxes and traditional jobs may likely not exist as we know it today. These concepts are predicated on an economic system that will no longer likely exist.
The transition to a jobless economy where only a small number of robot designers are gainfully employed could be extremely problematic.
This article from the Economist last year provides a worthwhile overview to the matter. This is becoming a mainstream of new economic thought.
Everyone owes it to themselves and their families to personally know what the future may likely hold. The technology and automation trend spans the globe, no one can escape it in the end especially future generations.