-The Bible also condones slavery and preaches against homosexuality, so it doesn't rank very high on my "trustworthy sources" list.
I Object on the grounds of inaccuracy.
Evidence:
(bible supporting homosexuality)-The law says you can't do your sister, but the law also says that you have to be taxed directly from your paycheck, so the law doesn't get many "trustworthy" points either.
what do taxes have to do with trustworthiness?
I Object on the grounds of relevance.
Now my argument as to brother-sister incest: Why not? So long as you don't impregnate her, why can't you? There's no LOGICAL reason not to so long as she doesn't get pregnant.
We're asking you why, you need to prove that, not make us prove why not.
That is also your opinion, not stated fact.
I Object on the grounds of subjective reasoning.
So, can anybody find a LOGICAL reason not to do a very very hot sister if she uses birth control and you use a condom, and the doors are locked and she promises NEVER to tell anybody?
I have one. Post traumatic stress disorder. You just fucked your sister. Hell, you might have even taken her virginity. That is going to weigh on your mind for a while, and may, if not will, cause a form of stress disorder. Guilty Consciences are heavy.
Though, that's only a possibility, it should be reason enough
Also, your justification for incest (she's fucking bangin!) is very shallow.