If the super-rich want to live for ever our planet is truly doomed | John Harris

Instead of investing to cheat death, we should be trying to make old age livable and dignified for all

Welcome to the era of immortalists: scientists, dreamers and - crucially - billionaires, who want us to think of age as a curable disease, and our final end as something that could be indefinitely postponed. According to one estimate, the revenues of the global anti-ageing industry will increase from about $200bn today to $420bn by 2030. One sure sign of its rosy prospects is the involvement of high-profile people in the US who have made vast fortunes from the internet. If many of them can avoid taxes, why not death?

Death is sort of an affront to American life," wrote Zadie Smith in 2003. It's so anti-aspirational." In tech circles, this kind of distaste for mortality often blurs into the culture of biohacking" (fasting, closely tracking your vital signs, gobbling supplements and smart drugs") which is one manifestation of transhumanism: to quote the definition in the Oxford English Dictionary, a belief that the human race can evolve beyond its current limitations, especially by the use of science and technology".

John Harris is a Guardian columnist