I am not sure why cryonics are not in the menu of every reader here when he has the opportunity (you don't have it if you die in a sudden accident) to subscribe when it seems inevitable to die.
Not all of us want to live again in some unknown future without any sense of continuity or surviving relationships. Death is ultimately inevitable, even if a miracle like cryonics could postpone it the first time. The author's entire point is that we should accept this inevitability, not try to avoid it by any psychological means we can conjure. Only then can we respond appropriately.
What makes you say this? There is no fundamental aspect of physics that makes death inevitable except perhaps on the very very very long term (heat-death timescales).
Understanding and controlling every aspect of human biology is an engineering challenge. It's obviously extremely difficult, but we have no reason to suspect it's intractable.
If we manage to make cryonics work what tells you that people you know will not do it in the future or technology didn't make them live much (much) longer than expected? Why accept something as fact when there is an above zero chance that you can live longer?
When I was about 16, I read Larry Niven's _A World Out of Time_. It left me with very mixed feelings about the matter. Unfortunately all the times I had the means to sign up for such, I didn't have the desire to.
Tell me, what would you do if your spouse had no interest in cryonics but you did? It complicates the decision a lot.
