I like to think we're here to learn all there is to know about the universe. All of us will die long before we modern science actually figures out why reality is even a thing but whatever
Our knowledge of everything is now being recorded, unlike the ages before technology.
So we exist to reproduce and record our research for the next generation who will be able to use our research to expand upon it.
As we speak there are researchers looking to prolong life up to 500 years but let's be honest. It's probably too late for about 90% of the population that wasn't born into it. I doubt this break through will even happen in our lifetime.
This means we are all pawns for the new evolved generation.
People think that we are now on top of the food chain and are now the most intelligent species on earth we no longer need to evolve. We've done all there is. That is not the case.