Yeah, Steve. I have no problem with that. There are some great questions in life, though, where I don't think we'll ever be able to come up with any empirical evidence to answer them, because they are not matters of outer (exoteric) measurable phenomena. They are matters of inner (esoteric) meaning and consciousness. That's not stuff you can measure or observe by means of instruments, but it is stuff that still happens powerfully in our lives and affects us deeply.

Well yes, in other words there are things still to be explained. But who's asking these "great questions in life"? Unfortunately, it's usually (possibly not always - I always like to leave room...) a bunch of religious-minded or (almost worse) spiritualistically-minded morons who "ask" these questions. They are often not questions at all, but side-swiping rebuttals of plain-as-nose-on-face evidence. Never say never, of course, but always beware of those who claim stuff that "cannot be measured", etc. All such roads lead to God-squaddery.

I can't comment on the Shroud of Turin, as I'd have to do a lot of reading first in order to know more about it. I have no set opinion about the Shroud of Turin.

Then do a five-minute wiki job. It's really easy. Get yourself an opinion. You do appear to have opinions on mucho stuff that has vexed philosophers for millennia, so what's yer problem? Pete-ism?