According to Danish scholar Miriam K. Zeitzen, anthropologists treat serial monogamy , in which divorce and remarriage occur, as a form of polygamy as it also can establish a series of households that may continue to be tied by shared paternity and shared income.  As such, they are similar to the household formations created through divorce and serial monogamy. [ citation needed ]
Essays - largest database of quality sample essays and research papers on Disadvantage Of Polygamy
Betzig postulated that culture/society can also be a source of social monogamy by enforcing it through rules and laws set by third-party actors, usually in order to protect the wealth or power of the elite.    For example, Augustus Caesar encouraged marriage and reproduction to force the aristocracy to divide their wealth and power among multiple heirs, but the aristocrats kept their socially monogamous, legitimate children to a minimum to ensure their legacy while having many extra-pair copulations.  Similarly—according to Betzig—the Christian Church enforced monogamy because wealth passed to the closest living, legitimate male relative, often resulting in the wealthy oldest brother being without a male heir.  Thus, the wealth and power of the family would pass to the “celibate” younger brother of the church.  In both of these instances, the rule-making elite used cultural processes to ensure greater reproductive fitness for themselves and their offspring, leading to a larger genetic influence in future generations.   Furthermore, the laws of the Christian Church , in particular, were important in the evolution of social monogamy in humans.  They allowed, even encouraged, poor men to marry and produce offspring which reduced the gap in reproductive success between the rich and poor, thus resulting in the quick spread of monogamous marriage systems in the western world.  According to B. S. Low, culture would appear to have a much larger impact on monogamy in humans than the biological forces that are important for non-human animals. 
Secondly, team opposition, claim that women's rights will be limited. This is not true. Murdoch says that polygyny will prevail, but looking at the reasons why, this information is outdated and overlooked. People used to value lots of children because they needed as much help to assist the family business. And even in labour work, 5 husbands would be better than 5 children. Wombs maybe scarce but in today's society a family may only need 1-5 children, and that can be achieved without 3-7 wives. In today's society, their are millions of confident, strong women willing to take the lead. And as we introduce polygamy more and more people will be aware and this biased belief of male dominance will be erased. Because there are homosexuals, hetrosexuals, and mixed. All different in representation of sex. Some women may want polygyny, and some men want polyandry. We want people to choose, we don't want society to say polygyny will prevail.
In recent decades, marriage as an institution has declined, while premarital sexual activity and the age when one enters into a first marriage have increased, studies show. Sociologists offer a number of societal reasons, from the "sexual revolution" of the 1960s to modern technologies such as the Internet opening up broader avenues of sexual selection and temptation.
It's often not a conscious choice. Any woman (or man, for that matter) who continues to experience the same problem with each relationship could benefit from therapy. When you're the common denominator, you can't just blame all of the partners you've had.
While the social benefits of having provision for widows and orphans are clear, it is also clear that polygamy is not an ideal situation. Human nature does not take kindly to it, and it is certain to arouse envy and jealousy. So there are very good practical reasons to teach and practise monogamy besides the scriptural reasons that Dr Sarfati has quoted.