I am merely pointing out that these experiments demonstrate an innate and fundamental need for the brain to come up with explanations about the world. It is a consequence of evolution, of course. Scientists have thought for a long time that lateralization was an add-on, something that evolved to increase the efficiency of the brain. Now, if you have a machine that cannot grow much more in size, but each part of which has a double, one way to add new functions is to forgo some of the redundancy and recycle the now freed parts to take over the new functions. The reason for this second need is, again, evolutionary.
Humans are social animals.
As such, we have an innate need for companionship and social interactions. It is a biological need. Research on the genetic basis of depression shows that children who are abused or neglected react by turning on physiological anti-stress mechanisms that alter the biochemistry of the brain. With all these pieces of the puzzle coming together, it seems clear to me that the rationalist and humanist movement cannot limit itself to debunking and explaining. It has to provide a social network, a connection that people can use as an alternative to the mindless recitation of prayers on Sunday mornings.