Mystery should not be seen as an excuse never to question-- in that, I would agree with Tim Minchin. What I dislike about that approach is that the material and empirical try to claim the immaterial and ideal. The material is incredibly important, and I don't wish to deny that; however, the material is not all of reality. The material is simply what can be observed empirically. Different tools must be used for different aspect of reality, and the best tool we have for the immaterial is not empiricism.
I maintain that reality contains the immaterial, not necessarily existence. Existence as a term forces us into a certain understanding of the world, which would not necessarily include Reality. I would agree that there is no such thing as the immaterial in your eyes, as your (and my!) eyes can only perceive the material. However, I have experienced certain.... unquantifiable things that are [currently] best expressed through spiritual terms. Maybe one day we'll discover exactly how the the brain works in its totality. Until then, it is reasonable for me to express my experiences in an immaterial fashion.
I don't deny that everyone should always question. I agree completely with that. But what I'm saying is that I believe that no matter how many questions we answer, there will and should always be a sense of mystery within ourselves to drive us forward.
not mystery, but the love of God that overflows and spills over. In the Tanakh, a prophet (Jeremiah) complains that God's Word burns his fire like bones and that he cannot keep his mouth shut. The mystery of God is to be appreciated, but it is not our sole motivator (although it certainly can be!)
I like the way you speak. While I agree that it shouldn't be the sole motivator, I believe it should be at the heart of all motivation.