I did some probing on Google, and I was disgusted to find so many incestual people.
But since when is disgust a good enough reason to stop others? So what if the child is born somewhat defected - is it not their child they will raise? Many people did so in the past, yet it seems we generations are somewhat OK, perhaps? Babies come out premature. Should we fault the mother if she decides to give birth earlier? It is their sex life, their choice. It's not as though they are aborting the child, right? Is not death worse than living a life with some good memories?
*This is when I sarcasticly comment about bigotry.
**Oh, and "mother******" would become hate speech, lol.