"That isn't a reason against incest per se. It is merely an objection to certain forms of incest - specifically, those that lead to children."

And, you know, child rape by a family member. Which is probably, by far, the most common form of incest.

Though it does not thrill me to say so, you make a valid point.

It is worth noting though that cultural mores don't work well with shades of grey- they are best suited to black-and-whites. (i.e. do/don't instead of do this way/don't do that way)

Do you really feel bad about a consenting man and woman having a relationship? (or man and man or woman and woman) I have trouble identifying with this feeling.

You read too much into my words. What does not thrill me is realizing I was wrong.