"Assuming that each couple has three children, an original pair's cumulative descendants over ten generations amount to 88,572 people. That constitutes a lot of pointless, avoidable suffering. To be sure, full responsibility for it all does not lie with the original couple because each new generation faces the choice of whether to continue that line of descendants. Nevertheless, they bear some responsibility for the generations that ensue. If one does not desist from having children, one can hardly expect one's descendants to do so."