This Element explores the concept of antinatalism, which assigns a negative value to reproduction. The first section traces the historical development of Western philosophy as a reaction to antinatalist sentiments over two and a half millennia. It highlights how philosophers have constructed elaborate theories to invent imaginary purposes for human life, often in response to antinatalist ideas. The second section examines antinatalism in the context of human extinction, arguing that if people stop having children, the species will eventually cease to exist. This has led to attempts to find alternatives and justifications for reproduction. The third section outlines a normative view defending antinatalism theoretically and practically. It argues that it is morally corrupt for parents to impose a pronatalist mentality on their children before they can form their own opinions, as this creates suffering without redeeming meaning. The authors also discuss the role of meaning in life and how it has been a driving force behind antinatalist convictions throughout history. They conclude that near-universal meaning in life can be secured only by manipulating individuals into thinking that reproduction gives their lives meaning, which contradicts widespread ethical ideals.This Element explores the concept of antinatalism, which assigns a negative value to reproduction. The first section traces the historical development of Western philosophy as a reaction to antinatalist sentiments over two and a half millennia. It highlights how philosophers have constructed elaborate theories to invent imaginary purposes for human life, often in response to antinatalist ideas. The second section examines antinatalism in the context of human extinction, arguing that if people stop having children, the species will eventually cease to exist. This has led to attempts to find alternatives and justifications for reproduction. The third section outlines a normative view defending antinatalism theoretically and practically. It argues that it is morally corrupt for parents to impose a pronatalist mentality on their children before they can form their own opinions, as this creates suffering without redeeming meaning. The authors also discuss the role of meaning in life and how it has been a driving force behind antinatalist convictions throughout history. They conclude that near-universal meaning in life can be secured only by manipulating individuals into thinking that reproduction gives their lives meaning, which contradicts widespread ethical ideals.