I've long thought sex was a major reason why the Southern defense of slavery was so intense. But your claim that white men don't fight to free black slaves is contradicted by many items of evidence, including the white British Empire that devoted its military power to stamping out slavery all around the world. Likewise, your insinuation that stopping immoral sex was the main motivator of Northern abolitionists is a caricature. Your article adds something to the story, but it also detracts by being hyperbolic.