Personally, I find all incest disgusting. I won't read a fic that has incest in it, I don't care who the characters are. So I draw the line very firmly. I don't understand what people find appealing about it at all. It's their right to write about it, but I won't have anything to do with it. I feel the same way about chan as well.

I occasionally had to read incest fics when I was on the DA fic committee, and I have to say that was my least favorite part of the job.