Amos...that answer is a complete cop out.
As you well know incestuous relationships can involve much closer members than cousins.
As ever, your core argument comes back to the point that other peoples behaviour is none of our business, I strongly disagree with that contention on several grounds public health being one.
Homosexual behaviour and incestuous behaviour were viewed in much the same way by the public in general, before the large number of homosexuals inthe entertainment industry and in the media began to push back the boundaries against a voiceless majority.

I notice that you refused to answer my point about the homosexual group who believe that Aids is a "homosexual disease"(their words not mine")and who believe the disease can only be irradicated when evertone accepts that contention and medical research is concentrated on it.