How does the procreation-centered view explain opposition to same-sex marriage?

The procreation-centered view of marriage posits that the primary purpose of the institution is to provide a stable, uniform social framework for producing and raising children. Proponents of this perspective argue that because male and female biological contributions are both necessary for natural procreation, marriage should be restricted to opposite-sex couples.1

From this viewpoint, the state regulates marriage specifically to channel potentially procreative sexual relationships into enduring unions, thereby ensuring children are raised by both their biological mother and father. Advocates often contend that same-sex couples cannot fulfill this specific biological function, leading them to argue that extending marriage rights to same-sex couples shifts the institution away from its foundational purpose of child-rearing and toward adult gratification. Consequently, those who hold this view often perceive the movement for same-sex marriage as a disregard for the biological and social distinctions they believe are essential for the continued existence of society.21