https://www.lesswrong.com/posts/aSQy7yHj6nPD44RNo/how-to-see...
That said, a reduction of suffering may naturally lead to extended lifespans. However, the elimination of mortality is something altogether different.
We have an entire universe to grow and expand into, along with the capability for long-term thinking. These problems are solvable problems and a critical part of reducing suffering.
"A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die and a new generation grows up that is familiar with it. . . . An important scientific innovation rarely makes its way by gradually winning over and converting its opponents: it rarely happens that Saul becomes Paul. What does happen is that its opponents gradually die out, and that the growing generation is familiarized with the ideas from the beginning: another instance of the fact that the future lies with the youth." [0]
One can see Planck's Principle throughout human civilization, in practically every human endeavor. This is how we evolve as a species. Not just biologically, but culturally.