our parents aren’t having children

If someone doesn't have children, they're... Not a parent.

Unless you RFK means people with a child already, which makes no sense (and never did) except to religious nuts.

People aren't cats to have litters of up to 6 kittens, and kids don't grow up in 6 months.

They need to be fed, clothed, medicated and educated for 18+ years!

P.S. If you dump your kids out on their 18th birthday, spoilers! You're a bad parent.