Whatever we are doing now is also not encouraging people to have children. I'm sure many young people would rather choose a 1200 sqft home than no home at all, which is currently the case.
Your example of two teenagers is only relevant for 6 years of a family's lifetime. Why should we optimise for those 6 years?
Your example of two teenagers is only relevant for 6 years of a family's lifetime. Why should we optimise for those 6 years?