For all the talk about how worried we have to be about incest laws being overturned if the Supreme Court were to declare that it generally isn't really anyone's business where I put my penis, people seem blissfully unaware that in many states criminal incest between parent and child carries a much lighter sentence than does "standard" child rape or molestation. In other words, the law is much gentler when you rape your own kid as opposed to when you rape someone else's.
I guess incest isn't such a big deal after all.