The number of women in the U.S. who never give birth has almost doubled over the last 40 years. Sociologists say one reason for this increase is that more women are making conscious choices to not have children. That could be a result of feminism. Still, not having children, whether by choice or by chance, isn’t all that simple, even in post-feminism America. This is my Masters's Project at Columbia Journalism School and it's about the women who choose not to have children - the not moms.