I love kids, but even I admit that raising a large family in a small home hurts. People who want quiet, privacy, and lots of kids need a big house. And as Econ 101 teaches us, the best way to make large homes affordable is to allow the construction industry to build freely. In theory, then, one of the many benefits of housing deregulation is to increase fertility. Deregulation leads to low prices which leads to ample living space which leads to many kids.