Research indicates that atheists are more intelligent than people who believe in god. The greater the level of education, and the greater the level of intelligence, the less likely there is in belief in god.

People who are smart (in the top 1%) tend not to believe in gods.

One doesn't have to be very smart to be smarter than most.

Right now, there are about 300 million Jihadi who ardently believe in their god - so much that they are out there murdering, raping, etc. so that they can get to their 72 virgins.