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

[Purple Rabbit]

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).

This is a rather suggestive answer in that it introduces existence of some transcendental reality. In practice science can study anything that exists that somehow has impact on perceived reality. This includes a supposedly transcendant reality if that reality has any impact whatsoever on perceived reality. Of course it is plain to see that things might exist that have no impact on our reality whatsoever. Although much speculation has been about this (this phenomenon in itself is accessible with science) no-one has ever been able to explain what relevance transcendental realities have when there's no shred of impact on our reality. This is the realm of sheer speculation.

One could argue however that science has effectively opened up some transcendental realities, i.e. realities that before transcended our everyday experience of it. Examples are the world of the quantum, cosmology and mathematics. Though prior to the development of these areas of knowledge no-one perceived any of its content, science has brought all of this within reach of human perception and perceived reality. It has shown its profound impact on our reality even, someting that speculation is not capable of. Naturalism is devouring all kinds of transcendental realities right now. The existence of some unknown transcendental reality is easy to speculate about. It will always have some mystical power over many of us and indeed drives a part of human endeavour, science included. Laborious scientific work is what really opens up unknown realities to us.

@ Dharan
So ask yourself, do you wanna dream, do you wanna know or do you perhaps want both.