Until you have a child, it's very tempting to look at the...

Until you have a child, it's very tempting to look at the state of the world and say, "To hell with it, in 50 years I won't be around anyway." But if you have a child you don't say that, because even if you're not around in 50 years, your children presumably will be, and maybe even their children. You think of yourself as responsible to future generations in a whole different way.