Numbers of kids may also be relevant. If you're choosing to have kids, it still seems more ecologically responsible to have two or fewer. If two adults have up

Numbers of kids may also be relevant. If you're choosing to have kids, it still seems more ecologically responsible to have two or fewer. If two adults have up to two children, that's an overall reduction in population (because not all children reproduce or reach reproductive age). Fortunately this is already happening[0] which is why several Western countries populations are shrinking[1] often being propped up by immigration. [0] PDF Warning: https://www.census.gov/content/dam/Census/library/visualizations/time-series/demo/families-and-households/hh-6.pdf https://www.census.gov/content/dam/Census/library/visualizat... [1] https://www.forbes.com/sites/joelkotkin/2017/02/01/death-spiral-demographics-the-countries-shrinking-the-fastest/#35118d27b83c https://www.forbes.com/sites/joelkotkin/2017/02/01/death-spi...