In the UK, I know that Roman Catholicism accounts for as little as 8% of the population, with Atheism dominating public idealisms.
With the amount of people I've seen complaining about the election of the new Pope, it made me wonder whether (in Western culture, mostly) Catholicism is in fact dying out?
A recent article using the Vatican's figures suggested that recent spikes in Catholicism come from South America and Africa, which made me question how viable Catholcism is in more developed civilisations.
Source:
http://bbc.co.uk/news/world-21443313