When energy is created it cannot last forever. It eventually exhausts itself.
This is the same for the universe with all it’s galaxies in space that are known or undiscovered. Someday all of space will exhaust all it’s energy where it will eventually fold onto itself into entropy.
Physics describes this under discussions of cosmic degeneration and universal entropy.
What does this mean? The future of all societies, humans and all of civilization is extinction. There is no getting around it without talking about the theoretical or fantastic dreams of conquering all known space and time like gods.
All that we strive for, fight, and defend is for nothing at all beyond our egotistical desires in life. One might say that our toiling and laboring existence here in the now is just relative self masterbation.
Perhaps life is just a joke or somthing very cruel beyond even the best imaginations amongst us.
Think of the universe as a strong current in a river. You may try to fight against this current but eventually you will just be carried with it no matter what thoughts you may have in your mind.
Are we wasting our time delaying the inevitable? Many say yes.