Is it selfish to choose not to have kids?

Innovation is a numbers game, and the numbers are shrinking. Fewer young minds means fewer scientists, fewer founders, fewer artists. The green energy transition, the cures for the diseases that will kill us, the art that will make life worth living: all of it depends on a pipeline of new humans. The childfree environmental argument says fewer people means less damage, but it ignores that damage is a technology problem, and technology comes from people. A shrinking, aging world doesn't get cleaner. It gets poorer, more conservative, and less capable of solving anything, which is the opposite of what the planet needs.