This reddit thread lacks numeric data. Here is a survey from the Pew Research Center (their methodology is sometimes arguably biased, but the overall tendencies should be OK).
> How important is religion in your life?
> (I summed "very important" and "somewhat important")
> USA: 82%
> Germany: 57%
> Spain: 46%
> UK: 42%
> France: 37%
> Source: https://www.pewresearch.org/global/2008/09/17/chapter-2-reli...
On the same page, the graph that correlates Purchasing Power with Religiosity is also very interesting. The correlation is obvious, with the USA an outstanding exception. This anomaly probably has multiple causes, as the main Reddit answer explained, and especially the "unsafe environment": many people live in the USA with social conditions worse than in most western countries.