A general topic on "what started it all..."

[Ryft]

There is much in the way of metaphysical speculation, but none of it is based on science. If you want a scientific answer, you will have to be content with "we don't know" because science is predicated on phenomena of our space-time manifold. Science cannot be done where there is no space-time manifold, i.e., at the singularity or any transcendent reality (whether gods or multiverses, et cetera).