I have already outlined this argument above. It is a more realistic view of human nature. Why should these writers be protected from error, but not the subsequent copiers and translators - not to mention the many errors the Christian church has made throughout its history. Many apparent errors have been due to the Biblical author using unclear or ambiguous language. And perhaps most importantly, we avoid making people's faith stand or fall on minor details in the Bible.
Scripture never claims inerrancy for itself.
We do the Bible a great disservice when we try to foist upon it qualities which it was never intended to have. God can speak through an errant Bible. The world is a messy place. Despite the way that mankind has messed up the world, God is real and can and does act in our world. Proponents of inerrancy sometimes seem to limit God, as if he is incapable of speaking through an errant Bible.