Fundamentalists may be unhappy that religious observance has declined over the decades, but the data shows that, by most measurements, life has gotten much better for most people. There is little evidence that a decline in religiosity leads to a decline in society — or that high levels of religiosity strengthen society. (Remember, Rome fell after it converted to Christianity.) If anything, the evidence suggests that too much religion is bad for a country.
This has been well-known for a long time, no matter the howls and bellows of Southern Baptists. Nor should it surprise anybody; after all, the rise of Christianity represented a decline in thought and ethics. The ancient world gave us philosophy (Socrates, Plato), the beginning of medicine (Galen), the beginning of science (Archimedes), and enduring literature (Sophocles). Christianity gave us the Dark Ages.