There have, for years, been comparative studies of religious fanaticism and factors that correlate with it. By and large, it tends to decline with increasing industrialization and education. The US, however, is off the chart, ranking near devastated peasant societies. About 1/2 the population believe the world was created a few thousand years ago: the justification for the belief is that that is what they were ordered to believe by authority figures to whom they were taught one must subordinate oneself. And on, and on.