If someone lives forever, they don't evolve physically. This is basic. To the degree we evolve culturally, most of our culture comes to us in our eponymous "for

If someone lives forever, they don't evolve physically. This is basic. To the degree we evolve culturally, most of our culture comes to us in our eponymous "formative years." Leaving those behind tends to result in comparatively little change in culture over the remaining course of our lives. That is not a law of physics or biology. People get heart implants, or even exercise and become stronger. I rest my case. Rest your case how? You didn't demonstrate that it is selfish and immature to desire to live, perhaps indefinitely. This was not a call to try and live forever, this is a call to live boldly, take risks and not to fear death. Striving for immortality is the absolute opposite, the coward's response to the challenge made in the poem. I assure you that I do not make conscious decisions about whether I live a thousand years if I undertake a given activity. I am also pretty sure that I routinely undertaken relatively dangerous activities that would kill me. I doubt most people who becomes immortal will become the sort of conscious decision makers deciding not to take risk lest they jeopardize their thousand years+ lifespan. That doesn't seem to jives with human nature.