There are some things that I will never find out...
I will never find out what happened after 100, 500, 5000 or 5 million years from now.
I will never find out how far did the mankind spread beyond this planet, if it did. Did we colonize other planets? Did we step out of our solar system? Did we visit systems other than our own solar system in the Milky Way Galaxy? Did we visit other galaxies?
Did we discover what happens inside black holes? Did we discover in which direction time flows inside a black hole?
Did we discover worm holes or any other loopholes in spacetime to travel across this universe faster than the speed of light?
Did we meet any other form of intelligence that independently evolved somewhere other than this earth? How was that encounter? Did we get along well with them? What were they like?
Did we discover other universes with their own laws of physics?
Did we discover what actually the reality is?
Did we discover the nature and reality of consciousness? Was our consciousness a part of a bigger system, like a neuron is part of a brain?
Did we find out the mysteries of quantum physics? Did we discover why observation has an effect on the outcome?
Did mankind divide into subspecies? What subspecies did mankind divide into and what happened to those subspecies?
How did mankind end? How were the last humans? What happened to them?
What happened to the earth, solar system, galaxy and our universe? How did it all end? Was it all real or was it a simulation? If it was all a simulation, who was running it? If some advanced civilisation was running our simulation, were they also in a simulation? Who was running their simulation? And so on...
Time started at the big bang, how did it end? Was it a big crunch or the expansion of the universe tore apart the fabric of spacetime?