First, I don’t accept at face value your map, both on factuality nor interpretation. Secondly I recognize a difference between non-criminality and approval. There are locals that have de-criminalized minor prostitution too, but that isn’t to condone it. Thirdly I don’t look to Europe as some sort of moral example. They have been persecuting and murdering my coreligionists for millennia. Lastly, yeah gross. I am not interested in dwelling on how other people have sex. That’s vulgar. Incest even more so. It’s like pornography, if I have to explain to you or somebody why it’s gross then there really is no point.
There are some 6,000,000,000 people in the world. If a person has about 25 close relations, I don’t see how limiting people to 5,999,999,975 potential sex partners so we can eliminate incest is too much to ask. I don’t know why you self elected to become the evangelist for incest, but you might find a new hobby.
Lol...that map is not that accurate, that is true. Juridically speaking the law (in most European countries) is amoral, so therefore sex between consenting adults can only be limited for other reasons, other than moral.
And the law cannot approve of heterosexual incest, since biology has showed how dangerous its consequences are.
But since homosexual relations don't produce offspring, I don't see why same-sex relations between consenting siblings should be forbidden.