My wife is due in December. We are both in our 30s. We made a conscious choice to pump out as many kids as possible after realizing that antinatalism is cancerous. The BIGGEST problem facing people who want more than 2 kids is what to do about transportation. Because America is a car culture, if you want more than 2 kids you basically need to be able to afford a van. This is not a concession a lot of people are willing to make.