Have you saw those YouTube videos about genetic algorithms teaching a thing to walk of fly? You may think: this thing do not suffer or feel any pain in repeating millions of times the same moviments just to fall on the floor less and less, no problem at all.
Advance a thousand years in the future and someone may happily simulate the world where you live among trillions of another things trying to evolve.
Simulating a universe like your own except simpler would let you spot-test solutions to problems, and study analogous of issues in your universe to greater depth.
We do economic simulations all the time, with weak-minded agents.
Advance a thousand years in the future and someone may happily simulate the world where you live among trillions of another things trying to evolve.