What is one of the main reasons for the decline in family sizes according to Womack?

The decline in family sizes can be attributed significantly to higher living costs, as highlighted in sociological studies, including those by Womack. As living expenses rise, individuals and couples often feel the financial strain, leading them to reconsider the number of children they can afford to raise. This includes expenses related to housing, education, healthcare, and general living expenses that can lead to uncertainty about the financial viability of larger families.

Additionally, when living costs increase, families may prioritize financial stability and career advancement over starting or expanding their family, ultimately resulting in smaller household sizes. The economic pressures can shift family planning preferences, making smaller families more appealing or feasible.