In fact, I suspect most of the "jobs" left eventually would be around extracting those secrets out of the universe and making them work for humanity. Which is probably a much better use of human intellect than pretty much anything we do today.
That may be the future we want to end up in, but we'll only get there eventually. Unfortunately, in today's world we neither know the secrets of the universe nor can we survive without jobs. So until society reorients itself towards that future, we are going to have a lot of upheaval.