I admit I don't have all the answers but that doesn't mean I should accept things for which there is no evidence. If as you say this discussion requires a degree of faith then you have already conceded that your argument is not based on evidence.
The point I am making is that it would be close-minded and foolish to state that you would not be willing to accept that you are wrong if you are presented with empirical evidence that contradicts your beliefs. if you are not prepared to accept that you could be wrong then there isn't a discussion in the first place.