That is the cause that drives all of us; we meat-puppets, bio-piles, self-motivated obsessed carbon life forms that we are. The reason we do everything that we do is because we die. The meaning of life is that it ends.
The scrawled hearts on the park bench, the scratched names under your desk are cries from the past; reaching yearning, calling from that abyss where all things must go. We build cities and businesses, and lives because they are graffiti to the gods, and we want them to be hard to scrub off the walls.
Think about laborers under the beating sun dragging blocks for the great pyramids, think about the lives that were spent to turn great blocks of stone into a massive tomb for the ruler of a sand patch at the end of a muddy river. Thousands and thousands of hours of back breaking work, of lives spent like devalued currency, and for what? So one man could have a glorious tomb and take his riches into the after-life? Yet ten thousand, thousand men and women and children were buried in shallow graves in the sand. No embalming for them, no hope for an afterlife for them.
You think we are any different today? We work and sweat and labor to build high-rises that will be used, and then neglected, and then dilapidated, and then razed. Gone. Cities rise, cities fall, ruins fill the landscape and the flesh-toned tide of humanity rises and falls, ebbs and recoils, fades and though it is always dying, always being born, it is a continuous thread that stretches back into history, one meager life at a time.
Do you really think you are going to make your mark on the world?
Time is death, death is time. Eventually I will be gone, you will be gone, and perhaps if we are fortunate, we may be remembered by our descendants, or if we have done something famous or infamous we may be remembered long into the future, though that future does not really matter much to those still trapped like a fly in amber locked in the past.
I look at those scratchings on a park bench, and wonder at our own mortality, the great mystery that is death. What deep scratches are you trying to leave behind?