In the past few years, I've decided I'm very ambivalent about having children of my own. I love them, but in the context of 'not being mine.' After watching 'An Inconvenient Truth' and seeing how we're expected to hit 9 billion people on Earth, probably in our lifetime, I don't feel the urge to add yet another. So if my mom ever asks, for example, why I won't give her grandchildren, I'm blaming Al.