Man cannot live without some knowledge of the purpose of life. If he can find no purpose in life he creates one in the inevitability of death.
The ultimate meaning to which all stories refer has two faces: the continuity of life, the inevitability of death.
Human stories are practically always about one thing, really, aren't they? Death. The inevitability of death. . . . . . (quoting an obituary) 'There is no such thing as a natural death. Nothing that ever happens to man is natural, since his presence calls the whole world into question. All men must die, but for every man his death is an accident, and even if he knows it he would sense to it an unjustifiable violation.' Well, you may agree with the words or not, but those are the key spring of The Lord Of The Rings
There is nothing in biology yet found that indicates the inevitability of death. This suggests to me that it is not at all inevitable and that it is only a matter of time before biologists discover what it is that is causing us the trouble.
But there is nothing in biology yet found that indicates the inevitability of death.