People nowadays have a huge misconception of cuckolding being byproduct of pornography. What these people fail to mention is that cuckolding can be found in societies that don't have or never had access in porn (Ancient Rome, Native Americans, Nayar in India, France in the Age of Enlightenment etc etc).

Let's begin by saying polyamory is 100% natural. We relied on monogamy in order to stop warfare and create safest environments for our kids. Pornography, or the sexual liberation does not "create" the desire for sharing your wife, but is helping couples to "explore" their true nature.

For example a girl that is born in a vegan environment, and parents forces her a meat free diet (which is unethical). By the age of 18, she is hardwired not to eat beef/pork/chicken/fish etc. She is even disgusted by the idea consuming meat. One day by mistake she receives a salad that contains roasted chicken. Of course her body will reject the meat, 'cause her stomach is not prepared to metabolise it. If she keeps eating that salad for days (without knowing there is chicken in it) her digestive system will acknowledge the nutritional value and create the desire to consume meat. It only takes few days to accept the reality: she is in fact omnivore.

Cuckolding is not different. The strong males in a community, used to impregnate the females, and cucks were taking care of their children. Lots of times these strong males were invaders from foreign communities and greatly contributed on human evolution, by increasing the gene pool. In that way, mothers gave birth on healthier kids (thus the interracial kink). The only difference is, we (cucks, hotwives and bulls) are the meat eaters in society that greatly benefits from veganism.

And we should be grateful for our civilization. Not only allows weaker men to have their own sons and daughters, but we also have the freedom to succumb in our sexual instincts when we want to.

Edit: Typos