If the Bible is not 100% accurate in what it says, then how can you trust it at all? If small, insignificant verse #6 is wrong, then how can you put your faith in the belief that immensely important verse #22 is right? So isn't inerrancy mandatory?
It's a good question. I think, one would have to decide, is it logical for them, to read the Bible in the context, of a ''correct'', text, or not. If I'm reading the Bible, just looking for inconsistencies, or things I disagree with, it would probably seem filled with those things; if I'm reading the Bible, in a context, where I'm basically giving it the benefit of the doubt, in meaning, then it might seem pretty consistent. I personally, have not found ''mistakes'', in the Bible; what I have found, though, are instances where the nature of the theology could be questioned, as in, is it right, or wrong, etc.
That being said, some of us cannot just drop the Bible or our religious zeitgeist, for whatever reason, so I think that that is something to consider. Ie, we are not reading a text that we could honestly say, is completely false.