In The Moral Animal, Robert Wright laments, "A basic underlying dynamic between men and women is mutual exploitation. They seem, at times, designed to make each other miserable."
Don't believe it. We aren't designed to make each other miserable. This view holds evolution responsible for the mismatch between our evolved predispositions and the post-agricultural socioeconomic world we find ourselves in. The assertion that human beings are naturally monogamous is not just a lie; it's a lie most Western societies insist we keep telling each other.