[istorical]

It's a thing because it signifies the decline of American purchasing power. If we used to all be able to afford to pay our own rent, but now we can't and are relying on our parents, it's a sign that young people's purchasing power is going down. In the same vein of young Americans feeling distraught that their parents could pay off college loans working a summer job mowing lawns, or that they could afford to put down a down payment on a house by age 30. Young Americans feel like they can't measure up to their older generations financially. Salaries may be trending up numerically, but adjusted to inflation and cost of living increases it feels like we're stagnating or moving backwards.