The secular world is built upon science, which overturned the world of faith. Exchanging spiritual beliefs for objective facts looks like a clear-cut choice, but it isn't. In all our lives there are values like compassion and loving kindness that are not scientific, and so everyday life straddles two worlds. In one world having a compassionate heart means something important. In the other compassion has no meaning unless it can be reduced to data on a brain scan.
A mature person can live in both worlds comfortably, because they don't need to clash. Dr. Francis Collins is a physician and geneticist who is the head of the National Institutes of Health, but he also happens to be a devout Christian who has written movingly about his religious awakening. Besides straddling two worlds, which we all do, Collins has explored them both, in keeping with his bent for inner and outer discovery.
Yet some religionists can only tolerate one view of life, and they insist on fundamentalist beliefs, such as the belief that God created human beings in their present form and reject all scientific claims to the contrary. In the other world, some science-minded people cannot tolerate faith and mystery, and they reject any thing that cannot be proven as experimental fact.
In both cases, there is a total suppression of curiosity and a rigid insistence on "right think," to adopt the Orwellian term for beliefs enforced by punishment from higher up.