Fair enough that neither of us can hand over a mathematical proof; that's common ground, and the demand cuts both ways. But "I don't think so" isn't itself an argument against. I'd frame it abductively: which worldview better explains why rational inquiry, moral obligation, and an intelligible universe exist at all? Aristotle's unmoved mover, Kant's moral law within, even Rawls's veil of ignorance all point beyond blind matter. Imagine a trolley problem where no moral facts exist; the question collapses. Theism explains that pull better than naturalism does. Not proof, but the stronger explanation.