High unemployment is not sustainable. People won't just sit back and go "oh well, I guess I'm out of a job for the rest of my life. I'll just sit and do nothing".
The higher the unemployment, the more pressure on governments to do something about it, and the more incentive is given to alternative governments to introduce radical solutions.
I'm quite interested in the idea of universal basic income, since it would free up a lot of highly creative people to do what they love, and create new markets and push new innovative ideas further than is currently possible.
I don't know if/how it would work in every detail, but it sure seems like something we should be looking at as a society. I've heard rumours that there are places in the world where this is being trialled, but can't remember the details.