Independence requires free time. Kids, at least those with parent who expect them to go on to higher education, dont have free time. They dont just play baseball on the school team a couple days a week. They play on literally ALL the teams. Then there are non-school karate lessons. And thier language tutor. And thier doctor visits. And thier therapists for whatever learning disbaility they are told they have. Middle class kids are cogs in a factory. Their greatest free time is chatting with friends via smartphones while being shuttled between appointments.