[discostu]

Yes but did their "switch" do genetic harm to their children? Or would "playing both side" cause genetic harm to children. Breeding via incest causes the British royal family (sorry Brits, but Prince Charles is still the best arguement against inbreeding out there). Sodomy doesn't even make children and therefore cannot impact the genepool causing problems for future generations.

[FairWitness]

Yes but did their "switch" do genetic harm to their children? Or would "playing both side" cause genetic harm to children.

My response was to the second part of your statement that "gays don't breed". Your statement that "incest causes birth defect" could have stood on its own without the second part.