more expensive compared to what? You have to compare with the median income of people before the 60s too, which was a fraction of what we earn today.
Just ask any parent anywhere how much daycare costs.
In the 60s most women stayed home with kids for many years, whereas now very few do that. 6 weeks maternity leave is a complete joke.
What about expenses? Health care, home ownership, education, child care are extremely expensive. Only the upper middle class can afford some of these items.