Many parents put that pressure on their kids. After college, you're supposed to land a job, hit the ground running, move out, start a family, the whole deal.
Maybe the climate was different back in the early 90's. A couple of my friends used to get razzed, "You're 23 AND YOU'RE STILL LIVING AT HOME????!!!!"
Back then, it was unheard of.
People my age would be rolling their eyes to know there are 23-year-olds (and older) who still don't drive.
To my generation, that would be inconceivable.
When you're 15, you still can't do too much. Most places won't hire you until you're 16, and then usually limited hours, can't drive until you're 16, or 17, depending on your state.
But if you're 25, and your status is exactly the same as when you were 15, somebody dropped the ball. And it's not necessarily your parents.