Let's look at this in the long run. This may sound crude but natural selection will ensure that people who believe such nonsense as these two parents will not be passing down their inferior genes and inferior ideals. Eventually those people who believe such garbage will die out. Those with common sense will react differently and change their beliefs to favor actual science and medicine over a hokey religious belief (credits of course to Mr. Solo). In the end many kids will pay the price but won't society be better off?