I'd also argue that a lot of the reasons people think death is "necessary" are actually symptoms of senescence. Decreased neuroplasticity, for example, is likel

I'd also argue that a lot of the reasons people think death is "necessary" are actually symptoms of senescence. Decreased neuroplasticity, for example, is likely one of the reasons that old people tend to get "stuck in their ways" and are unwilling to accept new ideas. Clearly, part of solving the aging problem involves solving that too. A lot of anti-immortality arguments reduce to this problem. Folks who advocate ending aging do not want us to just live forever as progressively more decrepit and cranky old codgers. The point is not to keep you at 90. It's to keep you at 25 (and put you back there if necessary).