Robot never sleeps does your job indefinitely you are obsolete. A whole generation of people with nothing to do.
Perhaps the problem is that we have let ourselves be defined by our jobs and how efficiently we can do things. I think that is more the industrial revolution and Victorian values seeping into society. When we came up with the idea of assembly line production the humans were there as cogs in the machine, doing repetitive tasks...the people were taught their purpose was to work as efficiently an error free as possible...what the Victorians wanted were machines, they tried to turn humans into machines. Now we actually have machines to do the work we feel out of place.
The problem with saying humans are obsolete is that you're assuming you know the purpose of a human.Maybe we're just redefining our options.
I mean, I still write stories despite the fact there are way way better writers than me. I still draw, run, code, do my make-up, cook, garden. I'm no expert at any of those things but I enjoy them all to some degree. I'm obsolete if we think just about efficiency and results...but maybe the process is important too?
Just my feelings on the subject.