Islam and first cousin marriages

[Rev. Rye]

However, it's very difficult for me to believe that a long-term cycle of cousin coupling won't end in genetic disaster:

Hell, just ask the Targaryens .

Of course, I did discuss a real-life case of it, and one more extreme. Say what you will about the Targaryens, their inbreeding has only made them mad. It hasn't turned them into abominations that make people scratch their heads over their continued existence.