I have to agree with you on that. Nothing is more sickening and horrifying than pedophilia. But the spousal swapping shows the major problems that are already brewing in that household. This is just the tip of the iceberg with those parents.
So now we will be inundated with swappers coming out and fighting for their rights...presented as model parents...new standards of political correctness. If these parents are not "ashamed" of their lifestyle I can see no reason why they did not introduce and promote the concept to their children at an early age.