The Nature of Gravity

As I understand, science recognizes gravity as an independent force acting upon all massive bodies in the universe, carried and mediated by the proposed Graviton boson.

This could be, but for lack of convincing evidence (in my opinion), I've developed my own theory: gravity is not an independent force, but rather a constant electromagnetic attraction between massive entities.

In this theory, I propose that sufficiently dense bodies -- the earth, for example -- act as natural "anchors" for this force, creating a "gravitational center" or "gravitational reference."

Additionally, this theory transfers the role of gravity's "force carrier" to the massless photon boson, the quantum of light; and while I've yet to research this myself, I recently read that the maximum speed of gravity is predicted to be the speed of light.

Thus, the topic at hand is this: how do you believe gravity works, and what is your reaction to my theory? I'm inviting further exploration of it because I recognize the lack of concrete premises; I, too, wish to see greater analysis and development of it, but I'm only one man.

(If "theory" doesn't suit your fancy, you can consider it an hypothesis -- or even just a concept. I'm not trying to make it more than it is.)