It should of course be an option for those who want to be self-employed and have the independence to not have to be tied to one job for decades.
The problem comes when most people have to live in that lifestyle. There can't be stability in society if a majority of people don't have roots somewhere. What happens to the kids when we become a nation of gypsies? They need stability in their formative years. What happens when most senior citizens never had the chance throughout their lives to prepare for retirement?
Can you get a mortgage or even a car loan with a “gig”? Instability is right.