This stuff is too deep as it contains the meening of life and it ought to be locked away in the NU vault, for safe keeping purposes....
The meaning of existing is whatever you make of it. There is no right or wrong answer. But it is your decision to view whether the life you have lived and the life you will live has meaning or not.
We're just some cosmic accident that's sized smaller than dust in the grand scheme of the universe. Technically, logically, rationally, there's no meaning and we just exist. So give them whatever meaning that you want, since it's your life and who cares if we're just some flecks of pink dust? For me, the meaning of life is to appreciate beauty, be happy, and have fun!
There will come a time when all of us are dead. All of us. There will come a time when there are no human beings remaining to remember that anyone ever existed or that our species ever did anything. There will be no one left to remember Aristotle or Cleopatra, let alone you. Everything that we did and built and wrote and thought and discovered will be forgotten and all of this will have been for naught. Maybe that time is coming soon and maybe it is millions of years away, but even if we survive the collapse of our sun, we will not survive forever. There was time before organisms experienced consciousness, and there will be time after. And if the inevitability of human oblivion worries you, I encourage you to ignore it. God knows that’s what everyone else does.
Existing is just living life. Nothing more nothing less. Up to us how we live it since we are given our own free will.