Regarding gay rights and their social issues, I must first firmly declare that I have neither enmity nor prejudice toward any gay person or group simply because I have nothing at stake with this issue. To the gay defense, genetic attraction appears to be the strongest and most popular argument to support "equality." It seems to go like this: Due to a dominant gay gene, an individual naturally prefers mating with the same gender. If the gene idea proves to be incompatible with evolution, then we must turn to other arguments and accept that being gay is, in fact, a choice. Unless logic reveals that gays are naturally harmful to society, no part of that choice justifies prejudice. That said, unwelcome advances naturally burn bridges, and gays are also obligated to avoid all body language indicating even the desire for making such advances toward those who may not welcome them.
Given that evolution favors genes which produce strong offspring. The greater the chance of producing the greatest number and strength of offspring capable of also producing the greatest number and strength of offspring, the better the chance that those genes will continue to the next generation. The presence of any gene which reduces the strength or number of offspring, without making substantial contributions to some other important survival trait, should be expected to produce a genetic line which cannot compete with the others for resources and constitutes a smaller and smaller part of the population until it eventually dies off. Gay genes cannot compete with straight genes, even if those with straight genes are naturally compelled to support those with gay genes (despite evidence to the contrary in modern societies), because of the simply fact that gays tend to have fewer offspring and less ability to manage long-lasting, stable and healthy relationships while raising children. According to current statistics and recorded history, the gay gene distracts from creating large numbers of strong children in healthy families. Given that gays do not need marriage to commit to a lasting union, we may easily ask: How many gay couples have raised at least one successful child from birth to 18 years old within an official and stable "gay union?" I do not know of any to be honest, and if there have been any, the number is likely to be very small, even as a percentage of the known gay population alone. Even then, it is expected that such a gay family also contain at least one mother because the gene which makes the parents protective of their offspring would naturally require the mother to be part of the union for the sake of the children. Any gay gene must allow the influence of a straight gene, and a protective gene which includes the mother in the family union. Lacking a mother in the family, the genetic explanation fails.
While it is possible that one gender could become confused about his or her own gender identity and thus trigger the recessive same sex gene, even that implies that a choice was made to be gay, namely the choice to identify one's own gender as being of the opposite gender. Gender confusion appears to be more of a psychological issue than of a gene issue. I tend to prefer this explanation. Ironically, the preference of gays to engage in opposite gender role-playing seems to clearly testify a lack of gender confusion in at least one of the parties in their assumption of their own natural gender. It also reveals the presence and strength of the straight gene (which promotes attraction to individuals with key characteristics of the opposite gender). Lacking the gender confusion, we are left with simply the choice to find pleasure wherever we feel comfortable or able to obtain it. If the lack of female desire for sex drives men to find pleasure with other men, then we are left considering the reason for low libido levels in women and solutions to help them find as much pleasure as men. Similarly, if women seek other women because the male focus on penetration fails to pleasure women, then it would be no surprise that women would turn to other women to better meet their needs for pleasure. A solution for enabling men to meet those needs may certainly allow a women to find as much pleasure with a man as with any other woman.
The consideration of the gay issue naturally brings serious hygiene issues associated with activities associated with the anus. Given the importance of hygiene to health, consideration of this aspect may natural sicken the audience. Extremely poor hygiene both directly and integrally defines the typical gay lifestyle. This poor hygiene also dramatically increases the transmission risk of HIV and other very serious and even deadly diseases, such consideration is relevant to the merits of both evolution and the gene argument, and to consideration of the merits of the gay choice.
Whether gay or lesbian, the gene which is most plentiful dominates while the gene which is not perpetuated dies out, according to Darwinian evolution. Evolution allows no room for the gay gene, as it intrinsically cannot be preserved, if it ever existed. Thus homosexuality (like all other LGBT issues) falls to the psychological argument.
Which leads to the real gay issue: "gay marriage" and the rights of children to a traditional marriage with a father and a mother.