According to reaserchers in California:

"Is humankind hardwired to be spiritual? Recent research suggests that we just might be, as scientists from the University of Udine in Italy identify areas of the brain in which levels of activation regulate spirituality. This study, published in the February 11 issue of the journal Neuron, serves as a first step in pinpointing the biological root of spiritual and religious feelings. Looking for a direct link between neural activity and spiritualism, Dr. Cosimo Urgesi and his colleagues interviewed eighty-eight cancer patients with brain tumors of varying severities before and after their surgeries. They discovered that the people who had tumors removed in the left and right posterior parietal regions of the brain showed a considerable increase in self-transcendence. Though spirituality in many ways is seen as separate from religion, both incorporate a complex of attitudes and behaviors relating to a transcendent human condition. Religious beliefs and practices have been a source of succor and conflict for nearly all of recorded human history, making this study significant in that it paves the path for future investigation that can advance our understanding of the neurobiological reasoning behind disparate outlooks on spirituality. While some experts discourage comparing the neural mechanisms involved in spirituality with those of religious practices, the causative link between brain functioning level and state of transcendence should be further pursued as it may lead to answers of why humans are religious, and potentially reveal our genetic predisposition for belief."

"Previous reports confirm the relationship between spirituality and frontal, parietal, and temporal cortexes. In particular, the brain's right parietal lobe defines the aspect of "me." According to Brick Johnstone, a neuropsychologist at University of Missouri, this region assesses the body's position and location in space. Any modifications to the area would disrupt this awareness and feelings of individuality would fade. In essence, the sensation of transcendence would be heightened. By comparing imaging of damaged brains and the subjects self-described spirituality, one study, published in the journal Zygon in 2008, provides evidence that people with less active parietal lobes (i.e., "Me-Definers") are more likely to be spiritual. However, the research conducted by Dr. Urgesi is the first to suggest a causative link. His team surveyed the spirituality of a person by scoring their level of self-transcendence, which is an allegedly unvarying personality trait that abstractedly reflects a decreased ability to sense individual self and largely identify oneself as incorporated with the universe. In order to gauge self-transcendence (or ST), patients underwent formal interviews focusing on their level of religiosity, report of personal mystical experiences or extrasensorial consciousness (including the presence of God), and acceptance of their illness. "Damage to posterior parietal areas induced unusually fast changes of a stable personality dimension related to transcendental self-referential awareness," Dr. Urgesi concluded. Because a specific area of the brain closely controls this trait, spirituality and religious behaviors may be a direct result of diminished activity in the parietal area."

In other words...since people are spiritual and religious and any number of other things, and since in science we have found that structure equals function in all things from basic atomic principles to higher brain function...then there must be a physical area of the brain that governs said spiritualism and religion and any other number of human enmotive responses to stimuli.

Ergo we are to a certian degree "hardwired" to be what we are.