Yes, it is hard to know without empirical evidence what is happening to the post 9/11 religious world.
Well the English church attendance results from 2005 were published a couple of weeks ago and they show (surprise surprise) continued decline. The rate of decline is slightly lower at 2.3% annually compared with 2.7% in the 1990s.
But read closely and even that tiny bit of comfort is misleading because, as the overall number of attenders decreases, the small number of immigrants, largely in London, who attend church exert a bigger impact on the overall figures.
The result is that British people are abandoning the churches at ever faster rates, and soon the majority of those who still attend church in Britain will be immigrants who come from unsecularized countries.
People are also living longer, which means that there should be more older people who grew up in a more religious age still around to go to church. But that still doesn't seem to be dampening the decline. It just means that the average age of those remaining in church gets older every year.
A particularly interesting case is the Methodist Church which is still on coarse to disappear altogether within the next 30 years, and the average age of a person in a Methodist church is now approaching 60!
Interesting what jgnat says since I gather that Canada is similar to Britain in being one of the most secularized countries.
Slim