And I've never said I "knew" the answers to these questions, merely that: a) They were important questions that needed investigation and b) Science is inadequate to cope with them.
You have NOT seen me "defend" Christianity. I have defended the Judeo-Christian roots of our legal system as a matter of historical fact. I am scrupulous to not inject my personal faith into any of this. I am not selling anything here, nor am I trying to make converts. I simply will not sit still when ill-educated atheists try to dismiss people of faith as if we were idiots.
Not even close to true. In the two main university settings I was primarily educated (one Evangelical Christian, the other Roman Catholic) I came away agreeing with *neither* on many significant and foundational points. You haven't lived until you get hauled into the Dean Of Faculty's office a month before graduation to 'splain to the head of the Theology Department why "literal inerancy" is a broken doctrine and why saying so doesn't make you a heretic. Then go hang out with the secular rationalists for a while a try to 'splain to them that - as a consequence of Godel - Reason itself is an inherently limited method of knowing things. Just for fun, follow that up in the Philosophy department and point out that ever since Hegel and Kant, philosophy has been busy destroying knowledge not finding it. Oh yeah, I really "meshed" with the cool kidz on campus...
My "worldview" such as it is, is that we should use science when it applies. We should admit that there are deep and important questions that science cannot in-and-of-itself "prove" (Oh, how I hate that word - for "proof" does not truly exist outside the narrow confines of mathematics.) And - most importantly - every thinking person should make an internal discussion of those questions an important part of their lives *even if we never get complete answers*. It is in the asking of these questions that much value can be found.
Some other cold month when I can't get in the shop, perhaps we can chat about why *no* system of knowledge ever can actually "prove" anything at all. In the end, what you "know" *always* depends on what you assume in the first place.