I have already responded as I needed to get this out there. I will bookmark this thread for further use when this comes up again. I just wanted to give him somethin to think about in an appropriate way. Here is what I wrote:
First of all, thank you for responding to my post.
I am not trying to be flippant or sanctimonious here, but asking you to seriously think about this.
I hear you saying that civil rights deals only with the denial of rights to an a) identifiable group in which 2) the members of the group have no choice but to be members of that group. Is a denial of rights to a group or discrimination against members of a group acceptable as long as the members of that group could decide to leave that group?
I am going to assume from your post that you are heterosexual. Were you born heterosexual, or was that merely a choice you made? If so, why not choose to be homosexual? Perhaps we should choose our grandparents more carefully. Understand that I am not trying to be flippant or make light of your opinions, which I am sure are sincerely held. I just want you to think critically about this issue from different points of view.
Additionally, biology and sexual orientation is the subject of research into the role of biology in the development of human sexual orientation. No simple, single cause for sexual orientation has been conclusively demonstrated, but research suggests that it is by a combination of genetic, hormonal, and environmental influences,<1> with biological factors involving a complex interplay of genetic factors and the early uterine environment.<2> Biological factors which may be related to the development of a heterosexual, homosexual, bisexual or asexual orientation include genes, prenatal hormones, and brain structure. These are only two of the many studies on the subject.
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Frankowski BL; American Academy of Pediatrics Committee on Adolescence (June 2004). "Sexual orientation and adolescents". Pediatrics 113 (6): 1827–32. doi:10.1542/peds.113.6.1827. PMID 15173519.
Royal College of Psychiatrists: Submission to the Church of England’s Listening Exercise on Human Sexuality.
I am not a biologist and claim no special knowledge in this area. Neither am I advocating for any particular study or explanation. Admittedly there are also scholars and scientists who find fault with some of these studies. However, in light of the scholarly and anecdotal evidence which is contra to your stated opinion, I think it behooves you to keep an open mind on the subject.