None of these beliefs are true — at least in the sense that there is a necessary logical progression involved. We must, however, grant that there are some strong correlations involved. People who grow up in a very positive religious environment are probably less likely to question the religious beliefs they are taught and abandon their religion, much less theism itself. Such an event is possible, but it is less likely.
Similarly, a person who grows up in a home where religion is used as a tool for abuse and control may be a bit more likely to question the foundations of that religion. This, then, can more readily lead them to give up the religious beliefs taught to them and perhaps even belief in God as well. Once again, such a result is not guaranteed because there are many who do not follow that path, but it isn't uncommon either.
Austin Cline writing on About.com
Myth: Atheism is Caused by False Religion, Bad Experiences with Bad Religions
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