Fleeting existence

Lifespan is limited and varies from species to species. A very trivial example could be comparing the remarkable life of a butterfly, which lasts on average between 15 and 30 days, to the many decades of a human's long existence.
Nevertheless, the more time passes, the shorter it seems to us, so much so that if we could stop it, we would without hesitation.
The longer we live, the more we value and cling to this exclusive and unique situation. Precisely because of life's preciousness, we must understand how temporary any form of existence is. We must not consider ourselves superior or irrelevant in our surroundings.