I'm speaking from a Japanese cultural point of view, here. To say that Japan has been wrong until now to focus on family values over rampant individualism, waiting until you are married to leave the home, and respecting the lives of the elderly until they pass on is one I've never heard before. And where do you get that their education takes a backseat by living with their parents? Post secondary education has always been a pillar in Japan.

Until this most recent generation Japan (and the rest of the world) had no problem starting a "life and family of their own" as you put it.