Even granting that we haven't yet solved the question of the origins of the Universe and maybe never will, the two options you cited (the laws of physics were different enough to allow causation vs it could have been a supernatural entity) are not equally valid. Everything we can observe in nature is caused by other things in nature. Leaping to the least plausible explanation before investigating far more plausible ones is not keeping an open mind to the possibilities; it's actually a definition of delusion (or if it's not, it ought to be). Especially when that explanation is rooted in fuzzy feelings flavoured by mythology written by superstitious people who thought rainbows were magic.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'
