I saw the following article a while back. It argues that soon enough we'll be able to construct robots with which we might fall in love...even marry. I suspect that this is the truth. Eventually, maybe quite soon, we'll produce something....if not robots, machines, then something biological...that could play the role of concubine.
What worries me is that men and women are already quite separate creatures. We *think* differently. But we work to overcome our differences so that we can sex and families. And we quite like having sex and families.
But what if we don't have to do that?