The simulation argument in my mind arises from thinking about the universe in terms of computation. The concept of computing and tractability comes from limitat

The simulation argument in my mind arises from thinking about the universe in terms of computation. The concept of computing and tractability comes from limitations and phenomena we see in the universe: energy and the arrow of time. Yet, the arrow of time doesn't appear to be fundamental to the constitution of the universe (with the laws of physics being identical in reverse), but only an emergent property of entropy. Like a human-inspired sentient creator, the simulation is the most in-reach explanation of creation for a given perspective. We could look beyond the limitations of thermodynamics, and consider that the contents of spacetime may just exist in the same way as the contents of pi or the Mandelbrot set exists. Why must the universe be "created" at all by computation, when computation doesn't even seem to be a fundamental, but only an emergent property of it?