Why is polygyny more common than other forms of plural marriage? Because of how humans are psychologically adapted for mating. The evolutionary reproductive benefits of having more than one spouse were higher for men than women. read more
Instead of illegal relations polygamy and polyandry provide rights and legalality and main benefit will no no abortion. Because killing a life of child's is more harmful then polygamy and polyandry. Main reason is that both husband and wife need some extra pleasure and change of taste. read more