apparently you are knew and new at this,
imagine a wise old tree who has done everything from seed to growth to making seed, it's at the end of it's life and it wants to consider death.
Death comes and death says: you are done wise elder, do you really wish to die?
Eldertree: Yes, I am old, tired, have nothing left to give and I believe my spiritual path is done. I am at last nothing.
Death: I would gladly end your suffering for it is my job, but did you consider the younger saplings you could impart loving wisdom to? What of the kind soul who has no home to live under but that of the love of a wise elder tree. What of the rich nutrients you provide to Great Mother Earth and energy to Eternal Father Universe?
A slight happiness encumbers our tree friend: Your point is?
Death: The great rivers pass by without care and recognition and purpose. They simply flow loving the fishes and spirits and trees they nurture. Also when there journey is "done", they become part of the greater ocean only to become part of the greater rivers.
Death: Point is life goes on. The oceans are always there because they will always be needed. We exist to heal and shine light in the dark to lost souls like lighthouses to sailors and ships. Even when there are no more sailing ships, we must remain vigilant so that some impulsive, young sailor will always be safe because lighthouse lightworkers are there.
"Wise" tree: I wish to live for I have purpose again.
death: you always have purpose. you are unchanging.! I am leaving now, I have a world to cleanse. See you soon.
At that parting Death left, Eldertree lived on for eons till by the will of GreatThunderSpirit that he finally rested.