2 – The wisdom behind permitting plural marriage

1 – Plural marriage helps to increase the numbers of the ummah (nation, Muslim community). It is known that the numbers can only be increased through marriage, and the number of offspring gained through plural marriage will be greater than that achieved through marriage to one wife.

Wise people know that increasing the number of offspring will strengthen the ummah and increase the number of workers in it, which will raise its economic standard – if the leaders run the affairs of state well and make use of its resources in a proper manner. Ignore the claims of those who say that increasing the numbers of human beings poses a danger to the earth’s resources which are insufficient, for Allaah the Most Wise Who has prescribed plural marriage has guaranteed to provide provision for His slaves and has created on earth what is more than sufficient for them. Whatever shortfall exists is due to the injustice of administrations, governments and individuals, and due to bad management. Look at China, for example, the greatest nation on earth as far as number of inhabitants is concerned, and it is regarded as one of the strongest nations in the world, and other nations would think twice before upsetting China; it is also one of the great industrialized nations. Who would dare think of attacking China, I wonder? And why?

https://www.nairaland.com/3640597/8-good-reasons-why-islam

It is not for peace....