The jobs created in the last 20 years have been worse paid and less secure than the jobs that were destroyed. The granddaughters of the 60s secretaries are baristas, nurses, cleaners, retail workers and other jobs with terrible working conditions and security.
That's the problem of the current system, losing jobs is fine as long as they are replaced by better jobs. When they are replaced by worse jobs you have a broken system. And we have a very broken system.
Ironically it doesn't free up the people who used to do them to go about doing what they want with their time - it only frees them up in the same way that the computer will free up memory, the people are able to be allocated to other places in the economy. The observation that automation tends not to free people in any genuine sense even runs against Keynes' predictions for how much we'd be working today.
That's always been the point of eliminating jobs: it frees up the people who used to do those jobs to do other things.