Marriage matters for child well-being because it provides stability, emotional support, and financial security. Children raised by married parents often experience a more structured environment, consistent discipline, and stronger family bonds. Marriage also encourages parents to work together in raising their children, offering love and guidance. Studies show that children in stable, two-parent households tend to perform better in school, have better social skills, and face fewer emotional and behavioral problems. While single parents can also provide loving homes, marriage can offer additional advantages that support a child's overall development.