"In the 1930s, economist John Maynard Keynes suggested we were fast approaching a time when our new “labor-saving technology” meant we’d have to confront the issue of “technological unemployment.” Due to the prodigious gains in productivity, wrote Keynes, we’d soon be working half as much—or less. By the postwar period, this had become a widely held belief."
Outside of the whole destroying the planet thing our species is doing this is what gives me the most societal despair. I grew up thinking this along with basic social safety nets would be the norm within my lifetime. Can't say when exactly when it was becoming evident this was not the case but it was pretty evident by the new millenium.