1.) Marriage is not a cross cultural constraint on evolutionary mating behavior. You made that up.<quoted text>
If I have posted anything not factual, prove it.
Otherwise face the facts and man up Browser!
2.) Homosexuality is not a sexual defect. It has been observed in mankind for as far back as recorded history. It is observed throughout the animal kingdom. It obviously has a purpose on the planet.
3.) Anal sex is not unhealthy or abnormal. Millions of people--straight and gay--engage in anal sex on a daily basis. Even animals engage in anal sex. Many male giraffes engage in anal sex with other male giraffes to the point of orgasm.
4.) There is not such term as "epi-genetic mistake"; a term you throw around regularly.
5.) You claim that once the origin of homosexuality is found, scientists will develop a cure, even though there are no studies by reputable scientists to cure homosexuality.
You lie regularly. You twist the truth regularly. You make up definitions and terms regularly. You, through your ignorance about basic science, distort scientific findings.