To be honest, I've know people who're very rich and devout, and people who are very poor and devout. At the same time, I know poor atheists and rich atheists. From my experience, religion isn't related to your social status, but more related to the type of person you are. I'm not really sure how to explain this, but I've met different people who have a variety of different beliefs. I think trying to pin down a trend is sort of meaningless as well, since my life experiences lead me to see that people tend to believe what they do for a variety of reasons. Marking one cause to the status of one's religion life is something I'm sure we all can see is a bit foolish and pretentious, since very rarely are things so simple as 1+1=2 in life, especially in psychology.