One would think that if anyones genes need reproducing, David and Victoria Beckham would have approval. But even in our success-obsessed culture today, the achievement and beauty of Mr. and Mrs. Beckham is not enough to get them off the hook among those who believe that ones family size should be a debate for the whole world to weigh in on.

Recently, an article in the UK Guardian criticized the Beckhams after the birth of their fourth child, Harper Seven, calling them environmentally irresponsible. Simon Ross, chief executive of the UK based Optimum Population Trust was critical of the couple: We need to change the incentives to make the environmental case that one or two children are fine but three or four are just being selfish . . . The Beckhams, and others likeLondon mayor Boris Johnson [who also has four children], are very bad role models with their large families. He went on to argue, as do many who are concerned with the worlds population, that with 7 billion people in the world and counting, there cannot be more people on this Earth than can be fed."

Mr. Ross, like others with concerns about overpopulation and the worlds food supply, fail to take a few things into account. When Thomas Malthus predicted in the 1800s that the population would overtake the food supply, he failed to also predict the impact of the Industrial Revolution, along with many subsequent technological innovations that allow crops to be grown faster and in harsher climates than he could have possibly imagined.

The concern about resource depletion isn't a proven science, and studies show that human capital and labor productivity are what actually drive the increases and reductions of resources. What's more, worries about overpopulation disregard the principle that life is inherently good. Even if humans and the environment existed adversarially (though I believe that they don't), human life is still an unqualified good. The choice for life shouldn't be made on the basis of environmental concerns, though all our decisions about consumption should certainly be with prudence. And empirically speaking, if there's a crisis in our world today, it's underpopulation. Most countries in Europe, for example, are seeing birth rates drop below replacement levels (looked at Russia lately?), though immigration will contribute some stability to these nations numbers.

While we must certainly care for the environment, the answer is not that families or developed nations are to blame. Even if developed nations use a larger proportion of the earths natural resources, the technology coming out of these countries allows many people in the developing world to be fed, and affords a greater quality of life to everyone around the globe. The earths resources are not a pie whose portion for everyone at the party shrinks as new guests arrive. Steven Mosher, President of the Population Research Institute, argues that because each person has unique value, more people means more for all of us more economic production, more potential for artistic and scientific achievement, more innovation. And speaking of innovation, two hundred years after the Industrial Revolution, we are still not running out of food.

What is more unsustainable than the current rate of population growth is the increasing numbers of people who do not grow up in stable, married families. Dr. Henry Potrykus, of the Marriage and Religion Research Institute, recently released "Our Fiscal Crisis," detailing the relationship between the future ofAmericas economy and the proportion of intact, married families. It is impossible for a country to remain strong when fewer than half of its citizens grow up in homes that do not offer the stability that marriage provides. This holds true for any nation, not just theU.S., and the negative effects of broken homes are well-documented.

David and Victoria Beckham have remained committed to one another in marriage, thus demonstrating what is right about families inBritain. To the Beckhams I say, Congratulations! The begetting and raising of human life in the context of marriage is one of the greatest adventures in the world. You are setting a good example for the world to follow.