Normally, when smart people don't understand something, they ask questions, not pontificate.
This normally is true..the first time that they encounter something. After a few dozen encounters they tend to form opinions. And you're being silly if you think that the only reasonable opinion that one can form is, "Keep an open mind and never express doubts because maybe they are right." (If you don't see why it is silly, then apply the same reasoning to someone who is approaching the same question from the devout side of affairs and ask where they should end up.)
Any reasonable adult in the USA has encountered religion more than a few dozen times.
Cheers,
Ben