According to a 2013 survey of 14,000 people in 13 nations (Germany, France, Sweden, Spain, Switzerland, Turkey, Israel, Canada, Brazil, India, South Korea, the U.K. and the U.S.) that was conducted by the German Bertelsmann Foundation for its Religion Monitor, there is both widespread approval for the separation of church and state, as well as a decline in religiosity over time and across generations.
In response to the statements “Only politicians who believe in God are suitable for public office” and “Leading religious figures should exercise an influence on government decisions,” even in über-religious America only 25 percent agreed with the former and 28 percent with the latter. All other countries reported lower figures (with Spain at or near the bottom at 8 and 13 percent and Germany in the middle at 10 and 21 percent, respectively). Moreover, most of the countries in the survey showed a declining trend in religiosity, especially among the youth. In Spain, for example, 85 percent of respondents older than 45 reported being moderately to very religious, but only 58 percent of those younger than 29 said they were. In Europe in general, only 30 to 50 percent said that religion is important in their own lives.
Why the decline? One factor is the dramatic spread of democracy around the globe over the past half a century. Most people surveyed agreed that democracy is a good form of government, with no differences across religious faiths.