As to adult behavior concerning consentual sex, I see no reason why the law needs to be involved. Where people stick Mr. Winkie is none of yours, or my business. Whether it's done to family members (adult and consentual) prostitution, pologamy or whatnot. It's simply none of our business.
HODAR RESPONDED BACK: "OK, and again. How many times have you heard of 'daddy' and his 13 yr old daughter? Lots? I have. How many times have you heard of Bob and Mary (both adults) doing the same thing? When one hears the word 'incest' one is conditioned to think of the case of child abuse; as it is the predominate case today.
HODAR ADDED: "As to adult behavior concerning consentual sex, I see no reason why the law needs to be involved. Where people stick Mr. Winkie is none of yours, or my business. Whether it's done to family members (adult and consentual) prostitution, pologamy or whatnot. It's simply none of our business."
First point: What you apparently perceive to be the definition of incest is not correct, no matter how you would like to use the word. Incest is incest. Child abuse is child abuse.
Second point: As others have mentioned, incestual pregnancies result in a high probabliity of incest-casued BIRTH DEFECTS. And sodomy is a (the?) leading source of AIDS. When AIDS spreaders donate blood and that blood is received by previously-AIDS-free victims, THAT is a significant HEALTH ISSUE and the government HAS the right to control it---no matter WHERE it occurs.
Third point: If we CAN'T outlaw certain acts---EVEN IF they take place "in the privacy of your own home"---then what prevents ANY activity being done "in the privacy of your own home" from being made illegal? Such activities as murder, euthanasia, abortion (even by a non-licensed provider), infanticide, computer hacking, embezzlement via computer, etc. could ALL be legal if done "in the privacy of your own home."