A Horrible Thought

Bryan Caplan finds one in Francis Fukuyama’s Our Posthuman Future:

Life extension seems to me a perfect example of something that is a negative externality, meaning that it is individually rational and desirable for any given individual, but it has costs for society that can be negative.

I couldn’t believe my eyes.  Did Frank Fukuyama actually mean that when a person has another year of healthy life, the net effect on other people is negative?  If so, why do people cry at funerals, instead of celebrating?

I still do not see the brightline between anti-aging tech and any sort of medical intervention after the end of youth, period.