Because it it increases so quickly, that dimension warps in comparison to the others, however if gravity did 'disappear' many things would be warped. I'm not sure, I just had an idea in my head that wasn't thought through.
I am very new to physics and astronomy, so I don't know much, but I have a theory so tell me what's wrong with it. So assuming the universe is infinite and it continues to expand, as it expands the force of gravity between objects will lessen and eventually matter will no longer have a...