Religion will grow, experts say, and here’s why

WASHINGTON – The numbers of people without a religious affiliation are increasing in some countries. But some demographers project that the global population will be more religious, not less, for one simple reason: religious believers tend to have more babies.
The growth in the religiously affiliated population is "largely about having relatively high fertility rates," Conrad Hackett, a demographer at the Pew Research Center, told CNA Dec. 15.