Atheism is not intellectual, it is the anti-thesis of intellectual, it is scientifically impossible for their not to be a God. Read up on the Second Law of ThermoDynamics, the laws of Physics, the Laws of Information Exchange(Information can only come from an intelligent source) etc.
Atheism is a way for the devil to make stupid people believe it is ok to sin.
Not all well off people are intelligent, not all poor people are stupid. There are many geniuses who are poor and many stupid people who are well off with important jobs. Education also dosn't relate to Intelligence except in that it will take less time for an intelligent person to become educated in the same thing in the same circuмstances.
Remember, Communism, Socialism, nαzιsm all came from the lower classes.
Most athiests are poor or at least live poorly based on how they live etc. Catholics who are poor will live much much better in the long run then any atheists.
:)