I completely understand the natural response many theists would have to this question, but try to think about it a little deeper before replying.
.. What if you saw the numbers of people who believed in your religion start to dwindle away (which they slowly are by the way) until just you and a few thousand or so were the only ones left? .. What if you went to your local house of worship, to find that no-one there believed any more? How many would it take for you to begin questioning yourself? Or do you think that no matter how many broke away from religion, you never would?
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