Even if the ultra-rich are able to extend human lifespan, would it be ethical?

Sam Altman, the chief executive of OpenAI, recently invested $180 million into Retro Biosciences – a company seeking to extend human lifespans by ten healthy years.

One way it plans to achieve this is by “rejuvenating” blood. This idea is based on studies that found old mice showed signs of reversed ageing when given the blood of young mice.

Altman isn’t the only Silicon Valley entrepreneur supporting life extension efforts. PayPal co-founder Peter Thiel, Amazon founder Jeff Bezos and Google co-founder Larry Page have poured millions into projects that could profoundly affect how we live our lives.

The first question raised is scientific: could these technologies work? On this front the jury is still out, and there are grounds for both optimism and scepticism.

The second question is just as important: even if lifespan extension is feasible, would it be ethical?

We explain why some common ethical arguments against lifespan extension aren’t as solid as they might seem – and put forth another, somewhat overlooked explanation for why trying to live forever might not be worth it.

Death is inevitable

Lifespan extension merely pushes back the inevitable: that we will die. However, the problem with this view is that any life saved will only be saved temporarily.

A lifespan extension of ten years is akin to saving a drowning swimmer, only for them to...

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