Naturalism and unitarianism

There's a striking parallel between naturalism and unitarianism. Naturalism is reductionistic. Naturalism prioritizes parsimony. So, for instance, naturalism prefers monism over dualism because monism is metaphysically simpler. Everything is reducible to a single substance. Matter and energy are the same thing in different states. And that's all there is. Naturalism labors to explain away the need for abstract objects or minds distinct from brains. Likewise, bigger things are composed of smaller things. The ultimate constituents of reality are utterly simple (elementary particles). 

Sometimes naturalists grudgingly allow for platonic realism or paradox because reality forces ineluctable complexity onto naturalism. Likewise, naturalists may posit a multiverse to evade the fine-tuning argument, or because that's one interpretation of quantum mechanics. But whenever possible, naturalism seeks maximal simplicity. Eliminative materialism is a limiting case of naturalistic reductionism. 

By the same token, unitarianism is reductionistic. Impatient with complexity. The unitarian God is preferable to the Trinitarian God because the unitarian God is simpler. A merely human messiah is preferable to God Incarnate because that's simpler.