It is very interesting, especially the sociological demographic data showing what is happening in response to the decline of church attendance.
In a nut-shell, communities that stop going to ‘church’ don’t produce enough offspring to be long term (centuries) stable, but those that do are long term stable.
As someone from a mainly secular country, I have often pondered the loss of a central gathering place the places like a church give to society.
A weekly service really helps foster a community. The only other thing that does is schools, but that excludes a huge swathe of people.