While I am not surprised that humans have the urge to believe in a religion or related system, what does send me up the wall with astonishment is the need humans have to feel threatened by others' beliefs.
Why are so many threatened by what others believe?
Why should you care what I believe?
Why should I care what you or anyone believes?
Why is it so threatening that someone believes something else... that people seek ways to exterminate others and perpetuate the most heinous atrocities simply because someone has a different belief? It is so bizarre.
Try this one on for size... deep down people know that their own belief systems are invented, illogical by definition, and simply absurd. With the support of similar-minded others they can block out their own doubts. But when they encounter others who do not share in the same self-delusion, the entire construct is threatened. Hence the violent reaction towards the other; it's a mechanism to protect ones' own phantasmagorical deception.
And people have been willing to kill for it for thousands of years, and continue to do so. And will continue to do so. Makes you just weep.
I am reminded of that bumper sticker: "Dear God, protect me from your followers."