They were not the genetic dead end, you are.
Now no cheating with artificial insemination, nature wants you gone for good.
If it did...it wouldn't keep producing us.
Most if not all gay people come from straight parents....who more often than not also have straight children....so much for a genetic dead end.....
I think he meant the genetic dead end is with you...in a natural setting without the help of a male insemination. Without that you end up dying of old age and no offspring. just sayin....