"Ask yourself why many of the best, most productive and healthiest breeds of domesticated animals are heavily inbred."They aren't. Look up the concept of hybrid vigor (Heterosis). Also if you are talking about dogs, then there is human selective process choosing only the best combinations.
GenericID wrote:
Government Cheese wrote:Incest is bad for society because it has a high likelihood of producing children with genetic problems.
This statement demonstrates a fundamental ignorance of genetics. Ask yourself why many of the best, most productive and healthiest breeds of domesticated animals are heavily inbred.
With marriage between more than two people, it becomes difficult to show that everybody is consenting. Also it introduces legal difficulties dealing with property rights.
Difficult, but not impossible, and when has difficulty been a valid excuse for not doing the right thing?