One argument for Occam's razor in metaphysical matters that I've always suspected is roughly true is that once you start adding unnecessary undetectable epicycles to describe the content of the world, such arbitrarily more complex theories cancel each other out (at least at high complexity).
Anyway, it just occurred to me that the theist cosmological argument has an equal in a cosmological argument for an anti-god of *infinitesimal* rather than infinite capacity, etc.