Due to your answer I can only make one conclusion : You are an adept of fringe science, that has no relation to classic physics. Fringe because you claim mass is not important at all.
That is weird. On the contrary mass is incredibly important. And the standard model predicts most of it, from binding energy, in an insightful way.
There are a very small number of fundamental values of rest mass, determined in Standard model by couplings to the Higgs field, which are AFASK arbitrary. All the rest, however, is not. And arbitrary is quite distinct from important. In a geodite the direction of the crystals is arbitrary, determined by spontaneous symmetry breaking, but vitally important.