Although few journalists cover this angle, almost every environmental disaster is caused by overpopulation - but not the kind many assume. It's not the black and brown babies of the developing world that most threaten our planet, but our own desire for stuff - a hunger for iPods and starter castles.
American consumption, and the global pollution associated with supplying it, is unsurpassed. It takes a Third World village to use all the resources that a single American consumes and, often, wastes every day. So even though the birthrate in America is historically low, curbing it further would be a good place to begin when trying to save the world. I am pleased to do my part.
It seems to me that the encouragement of childfree couples is crucial to saving the planet.
There are many other ways of contributing to the nuturing of the next generation without biologically reproducing. And so even though I'm sad at times that I never had children of my own, I'm also really glad that the children I do have are of the spiritual variety.