Reasons for polygamy

Re: Reasons for polygamy

The context Mirch is an answer in this thread http://www.paklinks.com/gs/life-and-relationships/533510-perspectives-and-blessings-taken-for-granted.html

Where upon I said that in a sense, it is a blessing a girls takes for granted if her husband doesn’t take on more than one wife. Someone spoke of fulfillment of needs and another spoke of reasons for marriage being lack of satisfaction. I was wondering if fulfillment of needs or lack thereof are the reasons.