[ThrowawayR2]

It's not a long term problem. To be utterly dispassionate about it, people who don't reproduce are voluntarily selecting themselves out of the gene pool, leaving behind those who genetically have a stronger drive to reproduce even under adverse circumstances. There's no moral or philosophical dimension to it; it's simply how the unfeeling mechanics of how nature works.

[CryptoBanker]

That type of selection would take way too long to manifest and make an actual difference in population numbers.