One thing to be said for polygamy is that it gives a man more freedom - yes, freedom. A lone wife will feel she is entitled to the entirety of her husband's attention. His very closeness gives her a purchase on him. It is as though he presents her with a large surface area to which she can apply her glue - which bonds deathly tight. However, one wife among many will feel no such exclusivity. She will feel no ownership and will make few, if any demands on her husband.
Love
It can move one's heart to see a young couple romantically enthralled with each other. But the heart becomes deeply sad just a few months later - to see their paralyzing dependence on one another.
It is not sex that keeps one from God, but love, its attendant emotions, and the lifestyle that supports it.