but too many people don't even think about it and just procreate because it's part of the Standard Life Script

As is their right, and not to mention biological imperative. Ironically, people not wanting kids, will be marginalized in the gene pool (assuming the trait is genetic). But yeah, overpopulation, unsustainable food needs, etc, etc. To paraphrase Dr. House, M.D. - "There are only two things people get stupid for - Money and Sex" :P