Yes, exactly. What's the crime? Where's the harm? And taking their children away doesn't square with any family values I know. If they harmed any one else by what they did in the bedroom and how they raised their family, I'd like to know what it was. If biology didn't enter the picture, people would agree they were the perfect family. So it must be the brother-sister hang up thing right? In Ptolemaic Egypt, they would regarded as the epitome of the ideal family.
(Denny Crane: "Sometimes you can only look for answers from God and failing that... and Fox News".)