(only a very rough grounding in particle physics here)
it offers an explanation for the abundance of matter - if large enough quantities of matter and anti-matter are created, and can gain enough separation, then although the attractive forces of the electromagnetic attraction are strong, the result of gravity repulsing opposite matter types would separate them. so matter/anti-matter creation would be symmetric, but all the anti matter would be beyond the edge of the observable universe.
lets just hope the LHC doesn't create a mini black hole which eats up the planet, before we find out..!
To further venture down the rabbit hole: it's unlikely that anti-matter actually has negative inertial mass though. Since that would result in an electrostatic repulsion from normal matter (which would, for example, prevent an anti-proton from annihilating with a nucleus). The observational evidence is pretty strong that anti-matter has at least a positive inertial mass. There is a remote possibility that inertial and gravitational masses can be different, which would be a very unexpected result.
it offers an explanation for the abundance of matter - if large enough quantities of matter and anti-matter are created, and can gain enough separation, then although the attractive forces of the electromagnetic attraction are strong, the result of gravity repulsing opposite matter types would separate them. so matter/anti-matter creation would be symmetric, but all the anti matter would be beyond the edge of the observable universe.
lets just hope the LHC doesn't create a mini black hole which eats up the planet, before we find out..!