I didn’t read all 11 pages of posts, so I apologize if this point has already been brought up. For my own part, as a former Baptist, we believed in the “Bible alone” because, to our minds, there was simply nothing else other than the Bible. What I mean is that we had no knowledge of any oral traditions outside of the Bible (sometimes I think Catholics overestimate how much Protestants know about Catholicism

). Had we known of any such extra-Biblical oral traditions, we may have been somewhat doubtful of their veracity due to the fact that anything passed along orally is generally more malleable and prone to change than something that is written down. However, had we had access to an oral tradition that had later been written down (but not so much later that it was likely to have been changed over time; perhaps writings by the early church fathers might fit the bill), we would have been more likely to believe in and adopt those traditions. Hopefully other Baptists are more knowledgeable than we were, but we didn’t know anything about the history of the Bible or the history of the Christian church; all we knew about was the Bible. So that’s what we used. In our case, it wasn’t so much “rejecting” oral traditions, as simply being ignorant of their existence. The Bible was all we used because the Bible was all we had.