Its interesting nobody chose polygamy to help women survive in this harsh world. That is the problem of why polygamy will not be accepted for a long time.
Too many men do it for self fulfilling purposes...because they have 'too much desire' or too big a sex drive. Those are not good reasons.
Polygamy was legally sanctioned by Allah because it gives more women protection of a husband. IT was not to only fulfill sexual fantasies. The later is perverting the beauty of a Gods laws.
More men need to take the privledge of being polygamous seriously and do it for the right reasons.
Don't ask women why they chose polygamy...women rarely choose it 100%. But they do it out of respect and sometimes love for a man who wants to do it. Because its burden on women to share a man, there is jealous they have to contend with which is normal. But women are the heros in polygamy. They share their man so that some other woman is not left vunerable and alone.
Polygamy needs to be legalized so that second wives have protection too. So that these backward ideas that polygamy is about fulfilling desires only get irradicated. Only with a strict system of enforcing the proper way of doing polygamy will it ever be respected.
Sorry if this ruffles some feathers...