I don't see how you reach that conclusion. Saying, "You will find X if you believe in X" doesn't suggest that.
Ok that's fair from the outside. I think from the inside, from a believers perspective, or for me at least, faith is something of an aesthetic or perceptual attitude - a way of perceiving
as creation, rather than
as plenum.
Its not just self reinforcing belief, theism opens up a new modality of experience with benefits. Its a new manner of "disclosure" or "alethea" (truth of reality) - like for instance, where Heidegger argues a technological attitude discloses things differently from a poetic one (i.e. as mere "stuff" to be measured, used and exploited), I think the atheist and theistic encounters with reality are of a different kind.
Its an alternative existential disclosure mechanism. Not just an alternative propositional attitude towards the sentence "God exists"...
IIRC faith is related to social areas of the brain. IMO this is not just a brain tragedy, it can help people like me who have little social and emotional direction, "plug in" to a more fine tuned emotional, or even spiritual, version of reality.
In contrast, atheism was (for me, I'm not generalising) more emotionally barren, whereas theism is more sensitised. IICR Husserl the phenomenologist said that the idea the universe is a materialistic plenum, doesn't do proper justice to the
personalistic side of reality - i.e. that we are conscious agents with emotions and direction in life. He called the first the naturalistic attitude, and the latter the personalistic attitude.
Next, I'd speculate atheists slightly higher IQ may be an artefact of their processing mode - more thinking rather than feeling orientated.
So I think there is probably a feedback loop in the brain. Personal feelings - if youre one of the faithful - are also processed by including the "God areas" in the brain in a alternative way. End result, another perspective on reality.
For instance, believing we have "gods spirit" in us is one candidate. For a Christian, ones personal "crosses" are understood through a more theistic lens. The definition on God supports or interacts with the idea of self.
Across cultures there seems to be a trend in faiths to have a concept and even "psychological witness" (however valid) to higher and lower ends of the psychological spectrum. The soul belonging to the higher end, and the "basic appetites" being the lower self.
Being ensouled seems to be an option, to be accepted or rejected. Belief in the God-soul-creation (etc.) complex, presents itself as valid from the inside. Invalid from the outside.
The point is its more than belief, equivalent to everyday beliefs, its a whole different way of processing reality, some of it consciously, and some unconsciously.
Even though we're in the same room for example, the "route taken" (i.e. unconscious process being atheistic or theistic) determines the phenomenology. For instance, as mentioned, 'seeing'
as creation rather than
as plenum.
Now, this isn't objective evidence for Gods existence. Scientists may say its a coping mechanism. But that's science, it sets its limits and stays there.
Adopting Faith? Its more like trans-world teleportation. Untestable, but significant all the same.
To the modern mind: Forget energy drinks, forget drugs... faith will give you wings!