FT,
What we feel, think or believe doesn't really matter. Empirical evidence suggests that smart people tend to be less religious and less likely to believe in god. Educated people tend to be less religious and less likely to believe in god. And smart, educated people? Duh.
Most of the recent scientific studies have found a negative correlation between I.Q. and religiosity. On the individual level, the education level is positively correlated with a belief in a God in African countries (for now, at least), and negatively correlated in Western countries.
It's called evolution.