The bigger picture:
Gravity is the most important force in the universe and created everything, because gravity caused motion.
Gravity is what keeps the planets together, gravity causes objects to orbit each other (moons, stars, black holes, galaxies, solar systems).
Gravity on the quantum level would explain why particles interact with the each other.
Gravity is the weakest force, because it was the first force and it used to interact on the quantum level alone, this is why it isn't as strong as the other force who don't interact/or interact less on the quantum level.
Gravity moves, but also merges.
Gravity would have caused the singularity to implode, because gravity causes merger, which causes heat/ an increase in entropy.

These processes would cause the fundamental fields (physicists could explain how this would happen if they took the hypothetical serious).
Gravity created the universe from the moment of the first thing, though this thing might be gravity itself.
Imagine a force reacting with itself, creating a stronger force, until these forces create particles, who then get merged together into the singularity.

Why would this be wrong?

Same goes for processes on Earth.
Crystals are formed thanks to individual ions that gradually group together to form crystal nuclei.
This would be impossible without gravity.
Proteines wouldn't be able to fold without gravity.
Nothing would exist without gravity.