Of the many near-universal life experiences shared across the world, parenthood is near the top of the list. For as long as humans have roamed the earth, their parents have brought them to the very pale blue dot we all inhabit. But what of the numerous folks who choose not to have children? This week, we speak with Susannah O'Neil about her experiences being judged or confronted by others (including strangers) about her decision. Why do some feel comfortable and permitted to make such remarks? How does a biological interest in procreation give rise to social commentary on others' decisions?