I truly believe you guys are overreacting (or maybe I am under-reacting hahah).
If you look at how society works RIGHT NOW; then yes machines walking in, filling out job applications, getting hired and replacing humans in droves sounds like a nightmare scenario.
But this isn't some alien force popping in out of no where, society is constantly changing and adapting. It doesn't seem like this has happened since we see every step of progress before our eyes, but much change has happened in our lifetimes alone. And what happens as a result? Society changes.
Imagine you have never seen a car before and then some guy comes to you and says "people will be driving several ton metal boxes 70-80 miles an hour, there will literally be hundreds to thousands of these boxes on the same road, and we are going to have lights where roads intersect to help the flow of people." If you heard that you probably could not think that would work. People are fast enough on horses, how the hell can they manage to guide anything going 80 miles an hour let alone with hundreds of people doing the same?
A lot of things are seemingly improbably/impossible until it happens. We are living in an age where things that once seemed improbable have become, or are becoming probable. By the time machines are able to replace 38% of our jobs, the world will be a much different place. 3-D printers will have become much more mainstream, alternative sources of energy will become much more mainstream (things like solar panel technology have grown exponentially). Medicine will improve, health will improve, access to resources will vastly improve, there will be less accidental deaths (driverless cars mean less chance of human error, I wouldn't be surprised if driving becomes illegal on main roads at some point in the future). Society will adapt and we will all live better lives.