The Purpose of Simulations

If we're a simulation, what do you think our purpose is? Or do you not, you don't even bother thinking about that. You just think about how to get out. That's kind of my thought about like a plausible reason why you might want to make a simulation. And moreover than that, why a civilization might be willing to invest a lot of time and effort and energy into making super fast computers that could run a very highly accurate simulation.