I'm disagree about the increase of the number of young people who live with their parents after they finish their education. There's three reasons.
First of all, Personal freedom is good for the health of both parents and their children. Without noticing it, people are stressed by the difference of the point of view. So living separately is good for us.
At the Second, there's no need to live together because of the improvement of the Convenience of life. People must take advantage of the amenity of modern life.
At the last, the improvement of technology enables us to overcome the disadvantage of living separately. Thanks to the technology, we can produce commodities so efficiently that Costs of living is no longer problem for us. Furthermore, Artificial Intelligence and Internet of Things enables human less supervising and obtaining safety.
In conclusion, I'm disagree about the increase of the number of young people who live with their parents after they finish their education. People must enjoy their own lives.