Good analytical post from Akin here on how the Qu'ran actually discourages polygamy. The idea that a man can marry a woman without any age limit is also a complete misinterpretation of the Suras. Here. The Prophet Mohammed married the widows of his friends to ensure their children had a proper upbringing. It was an ethical act, not an act of lust. Religions are often bastardised and corrupted in the hands of men.