I've had a theory for a while that we might be in a simulation run for historical purposes. That in a distant future, we or other civilizations evolved to a point where we were capable of creating a simulation of our own universe for the purpose of discovering more about the history of our universe and ourselves as a scientific endeavor. That or this is a virtual prison complex in which we are reevaluated for release back into society in the external reality. Just a couple of interesting thought experiments I've had.