This is a good book. Although perhaps Cannold repeats herself a bit too much, she has thoroughly researched her topic and writes in a easy-reading style, despite the many footnotes. Her main thesis is that the way our societies currently operate makes it difficult for both men and women to consider parenting during the years when a woman is most fertile. Women who are childless by circumstance are NOT childless by choice, she emphasizes. Changes need to be made in order for motherhood to be as available and respected a choice as choosing not to mother. This book takes a while to read, but it's worth it. It opens up a whole new perspective and makes the reader think hard about why we want to be mothers or why we don't.