Well, Esquillax, to consider that people aren't atheists because of some ulterior motives means considering that the evidence isn't as ubiquitous as they've deluded themselves into believing. It's a defense mechanism at its finest.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell