> "unless you can give your children a perfect life, you shouldn't bother".

Except in real life, income is negatively correlated with fertility. Meaning, those most able to give their kids the "perfect life" are the least likely to have kids, while those least able to give their kids the "perfect life" are the most likely to have kids.

Yes - because they have high standards! Higher than achievable standards, and more income to give up if they start trading off time from work to actually raising their own children.