I myself have two daughters, a 9-year-old and a 6-year-old, and I've learned from those girls how to be a better man. If I'd had a boy, then there'd be two shitty versions of me. The last thing I need to do is fail twice with two different people: me and my son. But I benefit from an uncomplicated relationship with my daughters--I get to observe how great they are. I'm always learning from them, and they are well-mannered with far better living habits than I have. When I get up in the morning, for instance, they're already dressed, with their teeth brushed and looking nice. I'm not capable of any of that.

It may not be surprising that there's a lingering preference for baby boys over baby girls worldwide. What's alarming, however, is that this global inclination is manifesting more strongly than ever. Historically, when nature is allowed to determine sex all on its own, about 105 boys are born for every 100 girls (and because women live longer, the ratio of people on the planet evens out over time, even tilting slightly toward females).