A very thin line separates life and death...
It is so thin, and can be broken so easily. Hence, mortals think of ways to protect that line.
The build shields, invent walls, create medicine and drugs to combat diseases.
They do all in their power to try and suppress their mortality.
However, death always comes.
It is the natural conclusion to every mortal being's journey. Even the self-proclaimed immortal Celestials meet death eventually.
The end of the line...
The final destination.
To put it bluntly; the death of a being, is not a state of nothingness, but rather, a conclusion.
Still, that didn't mean it was all over.
Kaelin's thoughts were linear.
He could hear the whispers, after all. The souls of the dead as the were ripped off their mortal bodies and sent on their respective ways.
A being was made of three main parts; body, soul, and spirit.