Here's my question; what exactly is virtuous about faith?
Why does the belief in something for which you have no evidence constitute a positive?
Though an atheist like me may be the last person you should ask this of, the answer, for me, was given by Billy Graham to, of all people, Woody Allen.
They were on a TV show in the 60's, Dick Cavett, perhaps. Allen asked Graham "What if you're wrong?" And Graham responded to the effect that even if he were, he still would benefit from his belief because it guided him to a life that was about being good to others and so on.
What he was saying, to me, was that the Bible works even if you consider it just a book of moral tales. One can't dismiss the Bible's impact as a summation of a certain moral point of view (or views). Aesop's "Fables" work as moral instructions even if they're just made up, so for someone like me who doesn't believe in the Bible's holiness, it's still a great work of moral instruction.