Supreme Court Same Sex Marriage Argumet

[Nope]

You made the assertion so feel free to back it up with a credible source.

It is not a pretty picture!!  I DO NOT LIKE LOOKING IT UP!!!

"Adults who as children were incestuously victimized by adults often suffer from low self-esteem, difficulties in interpersonal relationships, and sexual dysfunction, and are at an extremely high risk of many mental disorders, including depression, anxiety, phobic avoidance reactions, somatoform disorder, substance abuse, borderline personality disorder, and complex post-traumatic stress disorder.[41][68][69] Research by Leslie Margolin indicates that mother-son incest does not trigger some innate biological response, but that the effects are more directly related to the symbolic meanings attributed to this act by the participants.[70]"

http://en.wikipedia.org/wiki/Incest

Children are not considered mature enough to consent to sexual activity.  There is a difference between a parent molesting their child and two adult siblings who decide to have sex.  I don't know if there have been any studies on sisters and brothers who voluntarily have sex because it is such a taboo subject

I found this article with quotes from a study by a geneticist
http://pleiotropy.fieldofscience.com/200...lings.html

Alan Bittles, Australian geneticist, has collected data to show that the risk of birth defects increases from 2% in the general population to 4% when the parents are closely related (source). 

- See more at: http://pleiotropy.fieldofscience.com/200...5ZRRP.dpuf