Based on the World Values Survey. 'How important is God in your life?' Percentage answering 'very important'.
Based on Nationmaster data.
I show these graphs because they happen to show a strong correlations—stronger than most of The Spirit Level graphs. They are, as Wilkinson and Pickett might say, too strong to be the result of chance. But if they are not due to chance, how do we explain why people in less equal countries are more likely to believe in God and more likely to go the cinema? Does egalitarianism cause atheism? Does religion cause inequality? Or does going to the cinema make people believe in God?
The possibilities are limitless. But even if you exclude chance as a possibility (and that would be very hasty), explaining them in terms of income inequality requires a vivid imagination and a near-obsession with wealth redistribution.
As ever, our willingness to accept statistical associations depends on our susceptibility to the underlying message. Perhaps a socialist atheist would find these associations compelling. Or maybe a Christian film buff could use them as an argument in favour of capitalism. The rest of us might shrug our shoulders and say 'so what?'