Immortality seems like a better problem to have than mortality. Easier to solve if it goes awry. And I would rather live forever (well, indefinitely) than have children, acknowledging that some would prefer the latter or insist on both.

But fiddling with the brain, maybe there's a way to implant the sensation and memories of having lived for thousands of years when it was really only 80. Or maybe implant a couple hundred years and trim the actual life down to 2 or 3 years for ethical reasons if living is so unethical.