No bang hypothesis
We all know about the equivalence of mass and energy, related through inertia.
My guess is that energy and nothingness are similarly related, through time.
To explain, energy of any form that doesn’t experience any change of any sort (e.g. it doesn’t even experience galactic cosmic radiation or gamma radiation) is essentially out of time, and becomes nothing.
Nothing that experiences any sort of change becomes energy.
This hypothesis, interestingly, is self apparent.