The luck of the draw, I guess. Not everyone is born with blue eyes, either.
A lot of people are born with blue eyes whose parents have blue eyes. Homosexuals have sex with other homosexuals, producing no offspring to inherit any traits. The traits end.
First of all, it is obvious that your knowledge ( actually lack thereof ), of genetics is abysmal to nonexistent.
Do read up on Gregor Mendel, the father of modern genetics, and read his work. Why you didn't have to study this, in high school biology, I'll never know, but even a rudimentary, rather low level of knowledge, would have served you well.
"NOT EVERYONE IS BORN WITH BLUE EYES, EITHER." ?
Of course they aren't! However, if both parents have blue eyes, the chance of their offspring having blue eyes is close to 100%!
If only one parent has blue eyes, the number of children they have, how many of both parents' ancestors, come into play and many of their children will probably have blue eyes.
No matter how much the crazy lefties and/or some homosexuals year to believe that homosexuality is genetic.....IT ISN'T!
If BC pills, which became legally available in the early 1960s, had anything substantial to do with producing homosexual children,there would be far, far, FAAAAAAAAAAAAAAAAAR more of them! And BC pills are very late comers on the scene, vis-a-vis homosexuality.
Also, besides the examples posted earlier, to this thread, it is well known that male prisoners, for centuries, have engaged in homosexual acts; so have many men in the military! As a matter of fact, the Ancient Spartans, had entire platoons, that were only comprised of homosexual lovers!
And then there was Caligula...who would engage in homosexual acts with men, women, and had one heck of a thing with his sister! Yet neither of his parents were queer,though his Great Uncle, Tiberius, did have a pederastic craving for young boys, in his old age.
And just for giggles...how about the Colonial Governor of N.Y. and N.J., Edward Hyde, the 3rd Earl of Clarendon? He was not only married, but had 4 children with his wife, but was a raving cross dresser, who wore THE most expensive, made for just him, ladies' clothing...not only in private, but also when opening the Assembly ( like today's state Senates )and other public, official governmental occasions.Not a one of his ancestors were so inclined!
The Isle of Lesbos, in Ancient times, was supposedly a place where Greek women gathered and where the modern word "lesbian" comes from.
When there were still laws against open homosexual, in modern times, as well as in earlier times, when religions ( Jewish and Christian ) condemned such behaviors, most homosexual kept it to themselves, as did lesbians.
All male private schools, in England, were well known for boys engaging in homosexual dalliances/some boys having a "crush" on same age/older boys.
The same was true for all girl private schools; even day schools.
Have you never read nor seen the movie THE PRIME OF MISS JEAN BRODY, nor any other books about private schools?
Re male homosexuality....most have been molested, or "tried it out, at some point. And today, when it is thought to be "cool" ( though transgenderism is MUCH "cooler", now, especially re 3 and 4 and 6 year olds ), some easily lead people will "become" queer to be "IN"/"COOL"!