Life Sustaining Unions = Sex (Ethics/Politics) after marriage. Good Life requires Good Citizenship in a Good Society. Part of that Good Citizenship (a society that endures) involves birthing and rearing future citizens, in a protected and nurturing environment. Getting the primacy order WRONG gets LIFE (parents, children, society) WRONG, which leads to unhappiness. The statistically positive outcomes are very clear for children who grow up in a traditional, heterosexual marriage with two parents who are faithful to each other.