[satvikpendem]

There is more work to go around. Back in the day, the only work that was required was sustaining one's caloric intake via farming (not to even mention the sibling's point that that work was much more strenuous that today's). As civilization advances, more work is uncovered. It is akin to a form of Parkinson's Law (work expands to fill the time allotted), only in this case, the time allotted is the entire future history of humanity.