Legalize consensual incest in all Countries around the world

It seems we're talking in different waves,I want this debate to be worldwide as it could,and I showed that in my previous argument by giving different example of how laws address the incest issue. But it is obvious you don't want that and you care only about the place you live with I understood is an US State with clear laws against incest(what State please?). I know it's difficult to speak in a federal country of changing the laws on the federal level in affairs usually related to the domain of the States as it's concerning marriage laws,incest,capital penalty,homosexual rights and marriage,legalizing marijwana as recently in Washington, D.C. And Colorado. Let's get back to the arguments: I didn't say at all that I want to prevent people from their right to have an offspring,all I said is to impose on them to do tests,as it's in the Christian churches in my country(Lebanon) as a formality among others in the process of the marriage conclusion,but in the end it is the privilege of only the couples to decide whether yes or no they would marry each other even if any of them or the two have serious medical and health conditions. Inbreeding whether it's with immediate ascendants like parents and immediate descendants like children or with cousins only increases the risks of birth defects to about 7% in rare cases as an average,in brother-sister first,then parent-sibling,finally cousins,etc. This is all just in theory,no single study did prove any direct or even indirect correlation between inbreeding and birth defects,the famous case in 2009 I think of an incestuous real biological father and daughter couple in Australia who had a healthy daughter and another one with health problems,but it wasn't proved medically that's due to incest sex,the same for the famous brother-sister couple from Germany in 2007 who had two healthy kids and other two with some health problems. Anyway,most of the conducted studies tend to prove that if theoretically incest and cousin couples give supposedly their bad genes to their offsprings,they also supposedly give them their good ones,like in the case of two intelligent brother and sister and this would continue across generations as in Ashkenazi Jews who are said to have a very high IQ. So,many times the good genes overflow the bad ones,and sometimes the exact opposite,but this is not always obvious in the first generation of offsprings,usually it begins to appear after many generations. But since many people are convinced that inbreeding have nefast consequences on the babies born out of it,many incestuous couples make love together each day and or night,but decide not to have offsprings. As for homosexual couples,I don't see any problem other than it's a moral issue for most people because it's incest,and for some others because it's also homosexual; I'm sure one can find incestuous people against homosexuality. Many societies and cultures across history have been based on incestuous marriages between complete and or half brothers and sisters and between mothers and sons and fathers and daughters like in pharaonic Egypt who at a certain period stopped or lowered this practice,not because of birth defects,but to make political,social and economic agreements wit other empires like the Hittites,so the pharaons would marry their princesses in this only objective,they married also Phoenician and Mitannian princesses in the same purpose. Incest and inbreeding were also practiced in Roman Egypt,Zoroastrian Persia((Iran),and among many many royal families across the world as it was in Europe for instance. Parents don't need to endoctrinate directly their children any idea,belief and thought,all they have to do is that from a certain age,9,13 or other ,it's their decision,they can permit them access to incest stories and magazines that the parents already have at home,and the internet is here to the rest or most of the job,even if the parents doesn't want that at all. From my own experience,I lived among an anti Christianity father and a believing somehow practicing mother and did my studies in catholic schools and at least from the age of nine I have New Testament bible,went to church somehow regularly until for years ago when I almost completely stopped,and I live in a country where the political,juridical,administrative and military authorities are divided between the Christian and Muslim religious communities,and where every one of these communities have its own laws and regulations concerning personal status. I wanted to say,in comparison of supposedly incest families and societies,nothing of all cited made me a good catholic Christian who believe that extra marital and incest sex are sinful . Finally there are plenty of real stories of girls who has been introduced to incest sex by their fathers from the age of 12 and sometimes much before,and now they are in their thirties and forties happily married in a "normal",not necessarily incestuos,happy family with their husbands and children;it's the same thing exactly for brothers and sisters,full or half,who shared a sexual experience together,whether complete or not,for many long years. It took me researches on the internet from 2010 or even before: articles,blogs,forums,debates to arrive to these conclusions.