BTW, Steve Bruce makes another interesting point Re: atheism.
He argues that atheism is paradoxically largely a phenomenon of religious societies. After all it only makes sense to define yourself strongly as "atheist" within a culture in which religion is taken seriously by your peers. If religion has largely lost social significance then there is little need to define oneself specifically as atheistic. So atheism in an increasingly secular society is likely to increase to a certain point, after which it loses relevance (in some sense due to its implicit success) and then recedes.
That is why it is wrong to judge the secularity of a society by how many self-proclaimed atheists there are. A more fruitful analysis asks what people do rather than how they respond to rather artificial survey questions. If you want to know how religious a society is ask how many go to church, how many read religious material, observe various religious sexual regulations (or at least hope to be seen to do so), have religious weddings, watch religious programmes, and so on.
Actions tell us what motivates people. Responses to surveys just tell us what people on the spur of the moment think the questioner wants to hear or what makes them look best.
Slim