All the forces aim in the direction of minimising their energy to be as low as possible. Gravity pulls things down, energy was put into the object to move it away in the start however gravity is only attractive. It doesnt make sense that with the electric and magnetic forces to have a repulsive quantity to them. They are at lowest energies when they are infinitely appart? Could there be some reason why in the long run same charged particles or same pole magnetic fields repell?