Jim Bob and Michelle Duggar struck gold when they got their 19 children to be featured on TLC through various iterations of their reality show. As the older children grow up and start families of their own, it appears that many are keeping their family sizes smaller. Jill Dillard, for instance, seems content having two sons. Jinger Vuolo has spoken about keeping her family size small as well.
Could it be because the children realize they were not treated as individuals growing up and want to treat their own children differently?