On Monday Brian talked to Megan Daum, author of Selfish, Shallow, and Self-Absorbed: Sixteen Writers on the Decision Not to Have Kids. She explored the reasons many women are opting out of motherhood, choosing not to have kids. 

We follow up with a related but separate issue. What about people who want children but can't conceive?  

Childless, not by choice is a reality for many women and couples. Lisa Manterfield, author of I’m Taking My Eggs and Going Home: How One Woman Dared to Say No to Motherhood, talks about coming to terms with life without a baby after she really, really wanted one.