I see where you come from Looking; I clearly agree that the concepts of hell and Jihad are difficult to grasp.
Yet that is the purpose of this forum. And you are right it can go wild, as we are targeting the foundations of our faiths, on which are whole life is based whether Christian or Muslim.
But as I have stated several times, what happens here, is not necessarily what we engage in our daily social life, in fact this is apologetic, it is an area of religious science, and we learn, by winning debates, being debunked or simply acknowledging that sometimes there is no explanation.
What is vital, and a few individuals fail here, is to keep the emotions in control.
However, your Postmodern presupposition that no individual knows the truth, must be categorized in the same manner; what I mean is: if no one knows the truth, how then do you explain that such a presuppostion is true?