Maxwell's equations can be written as one equation with geometric algebra, □A =J/(c є0) If the math comes out ugly we can just macro our way to prettier math and stick complicated things behind simple looking symbols. I don't think this is a predisposition in the initial search as much as aesthetics on making the form of work pleasant regardless of what you start with. But then, maybe it's even more than aesthetics, truth and reality seem to have an (unreasonable?) simplicity to them, so maybe there's objective beauty in simplicity; I don't see the point in intentionally seeking out ugly formalisms for ugly's sake especially when we've had so much success with simple and elegant.