The Mechanics of Us

Prologue
Human DNA is composed of stars. Stars that have been broken down into nanoparticles that have dispersed themselves throughout the universe; they harness the energy of the cosmos and transitively embedded their limitless potentials in every fiber of conscious existence.
Logically, there has to be a reason then as to why life was given to those on Earth. Why humans were given such divinities from the universe. After all, the saying goes, "everyone was born for a reason," meaning those born with unworldly energies must have been given life to fulfill an unknown purpose that is greater than themselves. We are only given a certain amount of time in this world to live up to our given potential because, just like the stars, humans also fade away.
A star's glow is a result of a series of chemical reactions that are housed at its core. Similarly, our lives are like a series of chemical reactions, vibrant, unpredictable, chaotic. They only last for a certain amount of time before the limiting reagent is used up in its entirety, ceasing the continuation of spontaneity. All of us have a limiting reagent, a chemical that is used up first, which then halts the chemical reaction and stops its continuity. And unfortunately, some of us possess a more powerful limiting reagent than others, making their chemical reaction burn out quicker than others.
In this society, when your time is up, it is up, there is nothing else to be done. Any form of medication or medical intervention that was not created naturally by the Earth is frowned upon. That form dilutes the existing energies and manifestations of limitless potential. It makes those who use it less than and, in a way, tainted by the inconveniences of man-made alterations. However, grief can push some to go extra lengths to make their chaos continue even if it is just for a little bit longer. It is very uncommon to have someone extend a life they were destined to leave. However, there are a select few that have managed to turn back time and prolong the inevitable.