A married father is substantially less likely to abuse his wife or children than men in any other category. This means that boys and girls with married fathers learn by observation how men should treat women. Girls with involved fathers, therefore, are more likely to select for themselves good husbands because they have a proper standard by which to judge all candidates. Fathers themselves also help weed out bad candidates. Boys raised with fathers are more likely to be good husbands because they can emulate their fathers’ successes and learn from their failures. This is perhaps why societies with involved fathers are more likely to be female-affirming cultures.
Girls and boys with married mothers learn from their mothers what healthy and respectful female relationships with men look like. Girls who observe their mothers confidently and lovingly interacting with their fathers learn how to interact confidently with men. Same-sex homes can’t provide this important example and therefore will have a difficult time helping their children have healthy heterosexual relationships.
Glenn T. Stanton and Dr. Bill Maier, “Marriage on Trial: The Case Against Same-Sex Marriage and Parenting,” pg.118-119