Quote Originally Posted by BennyLaRue View Post
Why would you have problems with any consensual sex, sister or not, and why are the strong enough to qualify the act as evil? Is incest evil by its very nature? Your religious upbringing is rearing its head here, or you're trying to repress latent feelings for your sister. Might be both.

Your points might be stronger if you focus on the boy maiming/killing.
The question is in the context of what other people think. Most people think incest is gross and wrong and if Jim Bob and his sis Sally Jo from down the street were bangin, most people would think only negative things about them.