Interesting interview. No, I don’t think monogamy is necessarily “natural”. But if I could go all New-Agey on you for a moment, I think an in-depth, monogamous relationship with one person is a better vehicle for the development of the emotional, psychological and spiritual self than anything else out there. Not the only way, certainly – but it seems ideally constructed for the task.
Of course, some people just aren’t interested in growth. So there’s that!