I suspect the principle arises from elimination; the other prospects are too daunting to consider. "The universe is chaotic and false and your memories are lies because you were just created whole as you are", for example, sort of ends the conversation. Doesn't leave you much room to try and eat something tasty. And evidently even a little belief in a coherent universe is self reinforcing.
So I suppose the principle comes from the pragmatism involved with being embodied agents with needs in a hostile environment.
Where does the principle come from?