This is a contributing factor to many people having fewer children. Forget the hype of the “it costs 250K to raise a child” argument - “it takes 24 hour supervision until they are 20” that makes people say more than one kid is impossible to handle along with work and life.
This is a rediculous urban legend. There are some exceptions where a child needs extra care due to being severely disabled. But for the most part, kids in general don’t need to be watched 24/7. In infancy, they sleep long blocks of time ranging from 0.5 to 3 hours at a time. Gave me some time to do anything from house cleaning to reading to editing family video recordings of what our family did on special occasions. I even played video games with my wife when my kids were out and asleep. But had no problems stopping when they were waking up to go and help them out when neccessary.
And it turns out, most of that $250k is the cost of buying a bigger home.