So That's Why People Think He's a Flake
In response to the latest Edge question: “What Is Your Favorite Deep, Elegant, or Beautiful Explanation?” Aubrey De Grey discussed, instead of something related to gerontology, the end of monogamy:
My claim is probably obvious by now. It is simply that there is nothing about sex that morally distinguishes it from other activities that are performed by two (or more) people collectively. In a world no longer driven by reproductive efficiency, and on the presumption that all parties are taking appropriate precautions in relation to pregnancy and disease, sex is overwhelmingly a recreational activity. What, then, can morally distinguish it from other recreational activities? Once we see that nothing does, reflective equilibrium thus forces us to one of two positions: either we start to resent the temerity of our regular chess opponents in playing others, or we cease to resent the equivalent in sex.
Those parts of society “driven by reproductive efficiency” will outbreed the rest whether or not lifespans are extended. As I've said before
As for whether we should pay attention, if medical research stagnates the anti-natalists will disappear. On the other hand, if cryonics actually pays off we might have them to kick around forever. At first, they will be outvoted in elections and outbid in decision markets. Later they will be ignored completely as they become an infinitesimal fraction of the population.
I'm reminded of the people who used to think the work ethic would become obsolete. That didn't happen either.