Why don't most all Muslim Men use their god given right of Polygamy?

Re: Why don’t most all Muslim Men use their god given right of Polygamy?

And also remember that no the very next page in the Qua’ran it says that “men cannot treat their wives equally”… therefore polygamy is an ideal, only to be applied in extreme circumstances, for instance, when the population has been decimated by war and many women are in need (aka. there is a disproportionate number of women to men and many women with families to care for).

I do not think Allah would design humans to have monogamous instincts and tell us to disregard them without some great upheaval. :-p