This is boggling my mind as to why shouldn’t this be a main theory to explain gravity. I also know nothing about physics so what would I know.
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We actually managed to unify electricity, magnetism, and even the weak nuclear force very beautifully within a single theory, so this is not a crazy question. Einstein famously (and fruitlessly) pursued a unified description of electromagnetism and gravity for much of his life.
Ultimately, we have an extremely successful theory that describes magnetism and a separate extremely successful theory that describes gravity. Currently we do not have a description that unites them. We don’t know if such a description exists. If it does, it must only be relevant in highly exotic situations (for example, really high energies) that we have not been able to reproduce in experiments.
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