...even if one is a naturalist.
I never see theists bringing this up, and I think it's for the usual reason: it involves talking about a God or gods that they're not really invested in, and whose existence they'd find unsettling. But it seems to me straightforwardly obvious that the acceptance of brute facts - the acceptance that some things can exist, or come into existence, utterly without cause or explanation - means that the existence of God or gods has to be considered. They're just one more thing that can exist or come to exist brutely.
In fact, insofar as theism is presented as either a view that avoids brute facts, or that is inevitable if one avoids brute facts, there's some unevenness between the theistic and naturalistic worldviews. Theism is automatically true if a theistic picture of the world is true, obviously. But theism isn't automatically false, given the intellectual chimera known as naturalism. In fact, given a naturalistic universe, there seems to be no way to be sure one also lives in a non-theistic universe.
Does that mean we should all be theists by default?