Longevity

The constant drive to maintain youth and extend life in order to gain a little more time is the source of much suffering.
"The key to longevity is to learn every aspect of music that you can [and not doing fentanyl]." -Prince
Accepting the finite nature of life and the new experiences that await each new stage is universally seen as a necessary prerequisite for finding well-being, meaning, wisdom, and/or enlightenment. Stay healthy, but spend your time enjoying life, not worrying about how to make it longer.
Seeking a Good Death
In the issue of quality of life versus quantity of life, the traditional view that prioritizes extension of life as a moral trump card breaks down when modern technology allows the extension of technical life when there is no hope for that life to have much happiness, and often causes great emotional and financial pain in the process.
"Not how long, but how well you have lived is the main thing." -Seneca the Younger
This changes the consequences in the utilitarian calculation. Before modern medicine, it was not possible to artificially prolong the processing of dying for extended periods of time, which is effectively what some "life saving" interventions do. There are many situations where this causes a lot of excess suffering with no possibility of a positive outcome.
Modern society must be able to recognize when the balance has been tipped with no hope of recovery and accept the idea of a "good death". This guides our ethical calculus with regards to evidence-based euthanasia policy.
Studies have shown that psychedelics can reduce death anxiety, which can improve the subjective experience of death, as well as all the time leading up to it.
Seeking a Delayed Death
Techno-optimists that seek radical life-extension technology would be much happier if they focused on enjoying the time they have and spent their money on altruistic ventures. If we are able to extend life significantly while maintaining quality of life then that would be great. But it will require some significant changes to our culture and economy to prevent the hoarding of wealth and political power by the older generations. [1]
Why Getting Old Rocks
These videos to help you accept the inevitability of growing old instead of clinging to life. You're going to get old regardless, so you might as well embrace it. Fortunately our brains try to make that easy for us.
Hidden Brain - The Best Years of Your Life
Hidden Brain - Disrupting Death