Some small congregations must hire space, often secular, in which to hold their services. Tiny Orthodox Jewish congregations are exemplary, I believe.

That makes me wonder whether that fact would contaminate such a building for Bob such that no amount of regular secular use could decontaminate it for him.



(Full disclosure: I quit the RC church at age 15, and have for ages identified as agnostic since that's the only defensible position for anyone who also identifies with science)