Earlier quoted context omitted.
Why do they want their children to learn to drive?
Probably so they don't have to personally drive them everywhere. My mother has a coworker who has a 22 year old daughter who is essentially unemployable because she can't drive and therefore can't get to work and can't afford to move to a place where walking/transit is an option. The family has a spare car.
The actual problem is two-fold: parents who enable this dependency by offering rides and don't charge rent; and the daughter who evidently has no personal need whatsoever for a driver's licence. If she doesn't want a job, why would she care that she can't drive to one?