The problem with this lovely wheat-from-chaff heuristic is that "failure" results in the introduction of a new human life into a world that may not be prepared for it and will be strained ecologically for its existence. I would much rather have a world where the lazy, weak, and sinful pop pills towards an ecologically sustainable population than one where the virtuous are lauded for bringing five or six new people into existence, but, you know, at the "right time".
Me too. The failure mode of pre-contraceptive society (unwanted children) was terrible. But human nature is what it is, and many people are willing to accept terrible externalities in order to have a means to display their comparative virtue. The recent attack on universal health care in the US is an example. Many voters seem to desire a world where people who have their financial shit together will live, and others will die.
For a clear-eyed view of these less inspiring aspects of human nature, read Sapiens and Homo Deus by Harari.
