This is why I believe the Financial Independence movement is too rearward looking, if you have children. Parents now need to plan for the college (and graduate school) tuition and the house downpayments of their children, because the cost of both have increased by an order of magnitude in the last 50 years.
I reached the same conclusion. Ultimately I do not believe my children will own a house unless I give them down payments. Ensuring your children don't start life saddled with education loans + ensuring they can own a house are the two biggest legs up you can give them going forward.
The alternative is indentured servitude and variable housing costs keeping them impoverished forever.