>>95329569Absolutely false. Its in your genes to fuck like rabbits with the people closest to you genetically.
There is an effect in the brain where you don't see the people that you grow up with SEXUALLY. That is, you don't consider them at all for lewd or sexually purposes. (Note: not everyone has this, but the vast majority DO.) This effect means that boys and girls that grow up together, regardless if they are related or just close childhood friends, just aren't sexually interested in each other.
However, take fraternal twins, separate them at birth, and after the age of 17 or so, let them meet up with out knowing they are related, and they almost always start screwing like rabbits. When asked why, they report their sibling as the best smelling/most sexy smelling person they have every met.
Time after time... The stronger the genetic shared material, the stronger the attraction.
This is why so many deadbeat Father-abandoned Daughter meet ups results in sex. As does given up at birth sons meeting their biological mother for the first time.
tldr: Genetically speaking, we are very strongly programmed for incest. We just have a syndrome in our brain to exclude everyone we grow up with from considering them as sex partners.
