And how many new jobs will have been invented? You repeat without even thinking about it, what Marx wrote about his communism when work will no longer be necessary.
Which is the same vision as that of the Apostle John in his Book of Revelation about the messianic Jerusalem.
That makes many millennia that the absence of work has been considered either as a blessing from God or a social apocalypse.
No one is able to predict the jobs that will exist in twenty years, or in fifty years, with the Singularity of Ray Kurzweil in the background: another vision of this blessing/Apocalypse, of this compulsory farniente or fucking-good idleness, you know the mother of all crimes.