I'm sorry you're ignorant of modern science.
Originally Posted by Papa bull
"Sexual orientation probably is not determined by any one factor but by a combination of genetic, hormonal, and environmental influences." Source.
"Biometric modeling revealed that, in men, genetic effects explained .34–.39 of the variance, the shared environment .00, and the individual-specific environment .61–.66 of the variance. Corresponding estimates among women were .18–.19 for genetic factors, .16–.17 for shared environmental, and 64–.66 for unique environmental factors. Although wide confidence intervals suggest cautious interpretation, the results are consistent with moderate, primarily genetic, familial effects, and moderate to large effects of the nonshared environment (social and biological) on same-sex sexual behavior." Source.
"Despite almost a century of psychoanalytic and psychological speculation, there is no substantive evidence to support the suggestion that the nature of parenting or early childhood experiences have any role in the formation of a person’s fundamental heterosexual or homosexual orientation (Bell and Weinberg, 1978).
It would appear that sexual orientation is biological in nature, determined by genetic factors (Mustanski et al, 2005) and/or the early uterine environment (Blanchard et al. 2006)." Source.