shadow writes:
My question is, are there any theories as to How Gravity came into existence?
From my (limited) understanding of gravity, that is like asking how the gap between 2 objects came into existence.
The gap is a natural emergent property of 2 objects existing and gravity is a natural emergent property of matter/energy existing.
I think the question would be more accurately phrased as: "How did matter/energy come into existence?".
"There is no great invention, from fire to flying, which has not been hailed as an insult to some god." J. B. S. Haldane