Malthus was an economist, not a population biologist, but I suspect he was right in both arenas. We will face a major crunch whether water, food, or energy, (or medical care) and so long as we the people refuse to allow the losers to truly lose, we will need to find a way to support the losers. Analyze costs, risks, and benefits, and contraception appears a bargain. Include the fantasies of "morality" and religion and you are on your own, and back to preventing the losers from truly losing.
Social Darwinism, anyone?