Research: The Benefits Of Monogamy
Personally I consider monogamy as the best form of a balanced mating system, because it causes the least suffering to women.
But research also indicates benefits of mongamy. This article compares monogamous with polygynous marriages.
But on a more subtle level, the promicuous jerks, who ruthlessly manipulate as many women as they can by hook or crook into being their prey, also cause not only pain to the used women, but also social ruptures similar to what has been described in the article. While in polygyinous society the less successful men do not find a wife, under a promiscuous social norm, the less successful men are also competing for scarce prey.
"In cultures that permit men to take multiple wives, the intra-sexual competition that occurs causes greater levels of crime, violence, poverty and gender inequality than in societies that institutionalize and practice monogamous marriage."
"Considered the most comprehensive study of polygamy and the institution of marriage, the study finds significantly higher levels rape, kidnapping, murder, assault, robbery and fraud in polygynous cultures. ...., these crimes are caused primarily by pools of unmarried men, which result when other men take multiple wives."
"The greater competition increases the likelihood men in polygamous communities will resort to criminal behavior to gain resources and women, he says."
"According to Henrich, monogamy's main cultural evolutionary advantage over polygyny is the more egalitarian distribution of women, which reduces male competition and social problems. By shifting male efforts from seeking wives to paternal investment, institutionalized monogamy increases long-term planning, economic productivity, savings and child investment, the study finds."
"Monogamous marriage also results in significant improvements in child welfare, including lower rates of child neglect, abuse, accidental death, homicide and intra-household conflict, the study finds."