Homosexuality is a birth defect. Why take the chance on passing it along to the next generation.
An excellent way to put it.
I don't completely accept the hypothesis that homosexual behavior is of genetic origin. But in this case, better safe than sorry.
If a woman truly desires to be impregnated by defective germ cells, she could always advertise for such in the classified section of some seedy free newspaper. Or find a french guy.