The JW and the (pseudo?)scientific "hopes" of individual "everlasting life" (which have been connected on a couple of recent threads) have at least something in common: they all seem to take for granted that death is a bad thing.
As amazing as it may be to you, this amazes me so much that I don't know even where to start. Of course death hurts in reality when you lose people you love, or in imagination when you anticipate your own extinction. Untimely death -- death of children or very young people in particular -- is a tragedy. But tragedy is an ambiguous word.
If we step back only a little, death is an integral part of the system we call life. The cycle of sex and death determines the living sphere as that of constant renewal. New genes combinations, always unique and diferent. This cycle is what made us, not only biologically but also culturally. Signs, symbols, rituals, language, representations, which gradually made up the "world" on which our individual and collective self-understandings depend have been constructed over generations upon and against this specific biological (mammal) reality. Because of this experience we as a species have learnt to cry, laugh, smile, love and play, relate to each other as well as to past and future generations. Culture gets its structures from the necessity of getting around inevitable death and individual, social limitations through a potentially infinite number of strategies. Our specific representation of time which makes death a "problem" to some is itself dependent on death. Tragedy is the cornerstone of culture -- even though comedy comes right on its footsteps.
Imo it takes more than vanity or self-centeredness -- an incredible amount of ignorance, or lack of reflection about what they are, for individuals to (seriously!) assume they want to live forever. Can one really want his or her combination of genes and family, educational and cultural circumstances to remain forever, rather than the continuation of life through other combinations? And yes it is either/or. Even the WT cheats with this problem by portraying children in its Paradise pictures, obscuring the fact that a deathless mankind would also be a birthless and childless mankind sooner or later. Nothing like mankind actually.
I'm not discussing whether human individuals can or will (technically, for instance) reach the point where they are able to live forever (God forbid!). Rather, whether they would really want that given the possibility. And who, or rather what they would be -- or become -- if they did. What monsters of selfish mediocrity would never get tired or bored with themselves and never desire to disappear for the sake of the other...