Recent, reliable statistics of persons who are confirmed gays and lesbians (not just a few adolescent experiences) put their numbers at less than 3% of the U.S. population -- far less than the 10% figure claimed by the now-debunked Kinsey. It would be hard to stretch that 3% over the entire rest of the population in an attempt to claim that everyone has a gay relative.
As my family's historian, having studied the ancestors and descendants on both sides of my family from the 1500's to the present, and the families of close friends, I can tell you that it has been common for most family trees to produce heterosexuals for centuries, on virtually all branches.
True, no one knows what people do in secret, but if you take the ability to marry, reproduce and stay married as indicators, it's possible to not to have any persons who feel compelled to identify themselves as homosexuals in multiple generations.
Our current extreme social disorder and anti-family propaganda may start to change all this. Remains to be seen. But to me, that is also proof that homosexuality is a behavior, not an inborn trait.
While you managed to sound very authoritive, and knowledgeable...most all of what you said is crap. Most all of your family members have been married for five centuries, therefore no homosexuals in your family tree. Good for you! Proof positive! Okay, you and yours are now off the list: No doubt about those manly men and womenly women! They're normal as can be!
Go stand down on the corner and tell it all to the people waiting for the next bus (and hope they don't push you under it when it comes).