Perhaps many leave the church because they gloss over the repetitive assurances that all women are divine. Divine is not synonymous with weak.
We must understand that polygamy is a calling. Even when the church did practice it there were only a few families who were asked to do so. I haven't read any accounts of multiple wives who felt subjected to become such. From what I have read, these women were happy and found joy in living this celestial law. Sister-wives fulfilled a woman's need for female companionship and her husband provided his love, support and let's be honest, physical needs. To me, polygamy makes solid sense.