It's not about economic growth, it's about being able to afford a house big enough to raise kids in, have time to raise them, and be able to give them a good education. Housing costs in particular are so ridiculously high that lots of young people simply can't afford to move out of their parents' place, and if they can, it's to a tiny apartment.

Economic growth isn't going to help them if all that money is going only to the rich, and if you divide society's wealth right, you can still make sure they have enough during low or no economic growth. The problem is in political economic decisions.