Originally Posted by
Ergast
I was going for humorous, but that meaning seems to had been lost. Okay, let's go with this. It's biologically wrong because the race suffer for it. The child would have a very high chance of having defects. In the case of lesbian incest, there wouldn't be (if anything because two females can't father a child by themselves), true, but I was talking about incest in general.
About the morally wrong thing (the part where I was being humorous, even if it... not exactly ick me, but you won't see me shiping incest)... let's be serious here, there is that psychological component of the mind that makes you simply not go for your family. It's not moral, true, but if we disregard Good and Bad, and go with just facts, that's as close as we get to morally right and wrong. If nature tells you it's wrong, it's probably because it is.
On an unrelated topic, using homosexual love or race as ways to refute someone is almost close enough to the use of nazies to invoke the Godwin's law.