The wit and wisdom of Fred Butler

Excellent first-person story from a former KJVO convert.
Confessions of a King James Only Advocate

Similar to
Leaving King James Onlyism

Then read Fred Butler's
6 Arguments in Defense of KJVO

and his response to each:

• The Exclusivity Argument [1]
• The Exclusivity Argument [2]
• The Promise Argument
• The Textual Argument [1]
• The Textual Argument [2] The OT
• The Textual Argument [3] The NT
• Have Heretics Corrupted My Bible?
• Were Westcott and Hort Apostate New Agers?
• The Line of Good Bibles Argument
• The King James Translators and Their Work
• The Historical Argument

And perhaps, while we're at it, his analysis of the "inerrancy" issue, and the similarities between KJVO folk and the liberal / unitarian types:

• Liberals, KJV Onlyists, and Inerrancy
• Liberals and Inerrancy Part Two
• Responding to Non-Inerrancy Claims