Yeah, and all of those have an acute and direct negative effect that is detrimental to the well-being of that person. Homosexuality does not.
Anyhow, heres a selection:
Pawelski, J. G.; Perrin, E. C.; Foy, J. M.; Allen, C. E.; Crawford, J. E.; Del Monte, M.; Kaufman, M.; Klein, J. D.; Smith, K.; Springer, S.; Tanner, J. L.; Vickers, D. L. (2006). "The Effects of Marriage, Civil Union, and Domestic Partnership Laws on the Health and Well-being of Children". Pediatrics. 118 (1): 349–364. doi:10.1542/peds.2006-1279. PMID 16818585. Retrieved November 2, 2013.
"AMA Policy Regarding Sexual Orientation". American Medical Association. Retrieved November 2, 2013.
"Position Statement on Support of Legal Recognition of Same-Sex Civil Marriage" (PDF). American Psychiatric Association. Retrieved November 2, 2013.
"Statement on Marriage and the Family". American Anthropological Association. Retrieved June 9, 2015.
"Position Statement on Adoption and Co-parenting of Children by Same-sex Couples" (PDF). American Psychiatric Association. 2002. Retrieved November 2, 2013.
"The APA reaffirms support for same-sex marriage". San Diego Gay and Lesbian News. 2010-08-11. Retrieved July 28, 2012.
"Support for Marriage Equality" (PDF). American Academy of Nursing. July 2012. Retrieved November 2, 2013.
"Marriage of Same-Sex Couples – 2006 Position Statement Canadian Psychological Association" (PDF). 2006. Archived from the original (PDF) on 2009-04-19.
"Elizabeth Short, Damien W. Riggs, Amaryll Perlesz, Rhonda Brown, Graeme Kane: Lesbian, Gay, Bisexual and Transgender (LGBT) Parented Families – A Literature Review prepared for The Australian Psychological Society" (PDF). Retrieved 2010-11-05.
Brief of the American Psychological Association, Kentucky Psychological Association, Ohio Psychological Association, American Psychiatric Association, American Academy of Pediatrics, American Association for Marriage and Family Therapy, Michigan Association for Marriage and Family Therapy, National Association of Social Workers, National Association of Social Workers Tennessee Chapter, National Association of Social Workers Michigan Chapter, National Association of Social Workers Kentucky Chapter, National Association of Social Workers Ohio Chapter, American Psychoanalytic Association, American Academy of Family Physicians, and American Medical Association as Amici Curiae in Support of Petitioners
Herek GM (September 2006). "Legal recognition of same-sex relationships in the United States: a social science perspective" (PDF). The American Psychologist. 61 (6): 607–21. doi:10.1037/0003-066X.61.6.607. PMID 16953748. Archived from the original (PDF) on 2010-06-10.
Biblarz, Timothy J.; Stacey, Judith (2010). "How Does the Gender of Parents Matter?". Journal of Marriage and Family. 72: 3–22. CiteSeerX 10.1.1.593.4963. doi:10.1111/j.1741-3737.2009.00678.x. Archived from the original on 19 October 2017. Retrieved 26 July 2015.
Brief presented to the Legislative House of Commons Committee on Bill C38 by the Canadian Psychological Association – June 2, 2005.
Davis, Annie (October 22, 2017). "Children raised by same-sex parents do as well as their peers, study shows". The Guardian. Retrieved March 28, 2018.
Bever, Lindsey (July 7, 2014). "Children of same-sex couples are happier and healthier than peers, research shows". The Washington Post. Retrieved March 28, 2018.