This information comes from website “Catholic Answers”.  Information sources are cited at the end of this document and are noted in blue font.

“Marriage, is a major public health issue and not just a private affair. Marriages that are exclusive, permanent, unconditional, and life-giving contribute much to public health and longevity; marriages that fail any of these criteria and end in divorce create an enormous social, emotional, and health care burden for the couple, their children, and society.”

CHILDREN AND SAME-SEX PARENTS

• Children raised in families containing one non-biological parent are dozens of times more likely to be abused than children raised by both biological parents.63
• In some studies, children raised by homosexual partners seem to suffer from sex-role confusion.64
• Studies by Cameron and Cameron have shown a high incidence of incest between minor children and homosexual parents of both sexes.65 These investigators suggest that homosexual parents may be more likely to abuse their children sexually than heterosexual parents, so although the point is not definitively proven, the available evidence is worrisome.
• Children raised by both biological parents are significantly healthier, happier and better adjusted emotionally than kids raised by single parents of either sex. They are less likely to live in poverty or engage in violent crime or sexual promiscuity and more likely to be successful in school, career, and marriage.66
• There seem to be good reasons that children need both biological parents. The sexes are different. Because gender is a real phenomenon, it should come as no surprise that men and women parent differently. Men and women bring different, complementary skills to childrearing. Men are more likely to play expansively with their children than to do mundane care taking; women tend to be more practical. Mothers tend to be more responsive to their child's immediate needs, while fathers tend to be more firm, more oriented to abstract standards of justice (right and wrong).67 Kids need both.

• Mothers tend to emphasize the emotional security of their children, while fathers tend to stress competition and risk taking. Mothers tend to seek the immediate well-being of the child, while fathers tend to foster long-term autonomy and independence.68 Children need both parents, because they learn different lessons from each. Neither fathers nor mothers are expendable. The presence of a father is critical to a male child's learning self-control and appropriate male behavior, especially learning to respect women. Similarly, the presence of a father is vital for a female child's self-respect and eventual development of a healthy adult sexuality.69 Children need mothers just as much. The presence of both parents seems to be necessary for ideally balanced emotional and mental development.

Put in technical psychological jargon, the social science evidence suggests that women teach children communion (in English, that means the drive toward inclusion, connectedness, and relationship) and that men teach children agency (the drive toward independence, individuality, and self-fulfillment). Further, children of both sexes appear to learn self-control and responsibility primarily from their father.70 They fail to learn them when he's not involved in their lives. Our national epidemic of fatherlessness has spawned an epidemic of antisocial children.

Footnotes:
63. Diana E. H. Russell, "The Prevalence and Seriousness of Incestuous Abuse: Stepfathers vs. Biological Fathers," Child Abuse and Neglect 8 (1984): 15-22; M. Wilson and M. Daly, "Risk of Maltreatment of Children Living with Stepparents," in Child Abuse and Neglect: Biosocial Dimensions , ed. Gelles and Lancaster (New York: Aldine de Gruyer, 1987), 215-32; M. Konner, "Darwin's Truth, Jefferson's Vision: Sociobiology and the Politics of Human Nature," The American Prospect 45 (1999): 30-8; Judith S. Wallerstein, "The Long-Term Effects of Divorce on Children: A Review," Jour

64. R. Green et al., "Lesbian Mothers and Their Children: A Comparison With Solo Parent Heterosexual Mothers and Their Children," Archives of Sexual Behavior 15 (1986): 167-83; P. A. Belcastro et al., "A Review of Data Based Studies Addressing the Effects of Homosexual Parenting on Children's Sexual and Social Functioning," Journal of Divorce and Remarriage 20 (1993): 105-22; B. Hoeffer, "Lesbian and Heterosexual Single Mothers: Influence of Their Child's Acquisition of Sex-Role Traits and Behavior," (dissertation, University of California), University of Michigan, Ann Arbor, 1979; D. L. Puryear, "Familial Experiences: A Comparison Between Children of Lesbian Mothers and the Children of Heterosexual Mothers," (Dissertation, University of California), University of Michigan, Ann Arbor, 1983; J. D. Kunin, "Predictors of Psychosocial and Behavioral Adjustment of Children: A Study Comparing Children Raised by Lesbian Parents to Children Raised by Heterosexual Parents," Dissertation Abstracts International, 59 (1998): (6-B), 3094; G. A. Javaid, "The Children of Homosexual and Heterosexual Single Mothers," Child Psychiatry and Human Development 23 (1993): 235-48; K. Lewis, "The Children of Lesbians: Their Point of View," Social Work 23 (1980): 198-203
65. P. Cameron and K. Cameron, "Homosexual Parents," 757-66; P. Cameron and K. Cameron, "Homosexual Parents: A Comparative Forensic Study of Character and Harms to Children" Psychological Reports 82 (1998): 1155-91.
66. Waite and Gallagher, op. cit., 124-40.
67. Popenoe, op. cit., 139-63.
68. Ibid.
69. Ibid.
70. Ibid.