Even if it is a discussion, same reason, same stuff is repeated again and again.

If Sweden allowed incest then it is going by the scriptures not reason because the reason(science) clearly finds fault with such relationships. Going by the science, don't you think the authors of the scriptures had better apprehension of what is good for the human beings that they disallowed(made sin) having such relationships. when you reject the practices of people in near history, how can you support the very early, perhaps million yrs back , practices of humans.
Its pity that you justify incest as it folows from the scriptures while rejecting the same. Your reason again failed...Do you see it??