can't imagine being this afraid of mortality
And yet...
If I ask that same person what percentage of their thymus has converted to fat I will get blank stares or receive ad-hominem attacks from them. Whereas they predicted touch-downs I can predict their risks of all cause mortality and health span by observing their behavior and physical characteristics. I would never point it out to them as that would be rude and counter-productive. Knowing advanced analytical statistics on football players might net them some money from gambling but will not extend their healthspan or lifespan.
I find this to be both fascinating and disturbing at the same time. To me, the priorities of people are topsy-turvy upside down and backwards. I do not expect many people to share my view.
Or maybe you do want to feel superior to others, heck I know that's a motivator for some of my actions.
Not OP but their message resonates: the reason to do that regimen is to maximize the amount of healthy living. And to do so being comfortable spending money there that might not seem like a sure thing (but the payoff would be worth it).
I am curious, how could they know, measure it? (apart from inferred it from their age)
An uncle recently deceased in from cardiac arrest in his bed at his home during his sleep at 83. He was fishing the day before.... That's an ideal death IMHO. If you knew that you would have a similar death, would you be afraid ? I would not.
The issue isn't the "dying", it's the endless trillions of years of experience we are deprived of in death.
Noted in your uniquely written contract at birth is the ultimate outcome at somewhere around three score and ten. Get the most out of the experience you are given.
And people who claim to want to die before they're very sick in their old age seem usually to falsify the claim when they later reach that threshold.