I have a sentimental attachment to J. Lovelock’s Gaia hypothesis. In that framework, death would be a self-regulatory mechanism intended for sustainable resource consumption.
Unless we find another planet to colonise, an exponential growth of human population, together with no deaths by natural causes, would impact in a rapid depletion of resources available for consumption. We would fall prey of the Malthusian trap.
The sustainable option to hack death, would be preserving our minds digitally. However, there would be a significant portion of our Selves that would be lost in encryption. For example those behaviours and emotions influenced by biochemistry.