incest.

I was watching CSI Miami and these two teenagers who had the same father(but didn't know at the time) had sex and the girl was pregnant. After they found out that their father was being unfaithful to their mothers, the new pregnant teens killed him. Even after they found out about them being half brother and sister, they still stayed together. I was grossed out. The thought of it sent chills down my spine.
Now, I kinda understand if you rapped by your brother or sister or whatever, but I think that if you willingly do it, it's just wrong. I also see a lot of storiies about incest. I don't understand how you can write stuff like that. I'm not judging anyone.

What do you think about incest?