The BBC has a an interesting poll on what the World thinks of God. The results are as you'd expect, with Nigeria the most religious and the UK and Russia scoring very poorly. The more western, the less people believe in God, with the US being the big exception. By the way, more people believe that believing in God makes you a better person than people believe in God. But the question about religious acitvity made me think of another BBC poll, a couple of years ago: happiness.
On both religious activity and praying, Nigerians score best and the Russians worst. Here's the thing. On the poll on happiness, it turned out that the Nigerians were the most happy people of the world and the Russians the unhappiest. Now they both have quite something to pray for and maybe not always that much to be happy about, so is this a coincidence?