Lets see, from since the beging when man was created after Adam G-D had no problem with it, just about all his prophets before Jesus had multiple wives, so why didnt G-D allow women to have more that one husband ?
Lets look at nature, we see on male with multiple females. Let looks at a prime example, the Lion and the Apes etc there is always one male with multiple females. It is unusal for a female to share her self with another male unless the male abandons her.
Lets look at another reason. Scinetifically a female is more prone to transmit deseases than a man. A man can have sex with multiple females who stay with that one man. But now a female who has sex with more than one man those men will adventually catch something after a period of time.
Maybe if you study the female biological system compared to a man's maybe you can understand this. Its all about chemestry.
Here is another thing. It is in the NATURE of a man to be poligamous wereas a female is more monogamous.
Come on now you dont know this ? You live in a country were men are nortorious for pologamous acts in and out of wedlock.
And believer a woman under critical analysis of Islamic law has more rights than a man. And please before you answer this dont go by what some country does to their women which is not Islamic but most of the time based on cultural and tribal traditional custom.