General relativity shows that gravity is a culture of space time. Suppose that we are in a gravitational field. This can be caused by the presence of matter or being in an accelerating frame of reference. In either case, it is possible to select another accelerating frame of reference for which the gravitational field disappears. This shows that gravity is not a phenomenon caused by a particle, so why are physicists looking for graviton particles? None have been found and it seems to me that none will be found for the simple reason that they do not exist. Particles do not come in and out of existence depending on the reference frame.