- May 2016
It's not only financial burden. If you have ever lived in a female dormitory, or been in a university sorority, you would know how difficult it is to maintain peace among a group of young women (even when they don't share a boyfriend).
Even purely from the male's perspective, it really makes more sense to just have mistresses (free women) than concubines (kept women). A man and his mistress could part way once they grew tired of each other and start new relationship. He did not have to be married to a woman he no longer liked for life. Europeans kings and emperors were much more clever in this regard.