A lot of atheists put their faith in logic, but isn't that a bit... illogical?
Yes, but they believe what the Machine tells them...
How many times have you watched CSI and, using your logic, thought, "Ah-ha! It was that Steevenson guy!" only to find out, "What? It was the victim's transexual, one-legged, homosexual bodyguard!? I didn't see that one comming!"?
Don't watch CSI, but know what you mean. TV programmes are just that: Programs. They affect your mind. Some limit you, others enhance - like software for the subconscious. Seeing the recurring themes, they become predictable and thus, rather boring.
And you can watch pretty much any Star Trek episode and the Vulcans logic gets trumped by the Human concept of, "gut".
One of the Star Trek franchise's few concessions to human primacy. The Vulcan's are too stuffy, y'see...and humans can think outside the box of "pure" logic, it's our gift (one of many).
So, why do atheists put so much stock in logic?
Don't worry about it. Most of them haven't the faintest grasp of the rules of Logic. If they did, for example, they might question cherished concepts like "randomness" and "objectivism", or the oft-displayed proud ability to rationalize the irrational via shaky premises and woefully unsubstatiated assumptions.
Always remember, the intellect is a tool; a means, not an end. That is the most important thing.