You're a good friend to take my facetious remarks at all seriously!
I dunnoh. The recycling/repurposing you cite seems to me to be more of a moving over than a moving on? Which is entirely normal in human life.
But as an old curmudgeon I can't help feel it's less than the ideal when it comes to our beloved stones. Don't get me wrong--Loie asked me to pick my favorite place out of all we've visited together over the last 30 years (!) and I had no hesitation choosing Avebury. As it is today. (Well, maybe not today, it's probably raining there now but I'm sure you get what I mean.) With the MAs. So I'm a move-overer with the best of them.
It's possible that having supper in an old barn might give people a sense that there are better ways to build a **new** restaurant than throw up concrete blocks. At best it seems a rear guard action, but some education is better than none.
However, it's the recycling/reimagining/reappropriating/moving-over-not-on impulse that also gives us burned out tea lights and rotting fruit in the barrows. And at its worst, plowed out barrows. Most folks don't see anything wrong with all that. I can't blame them. The alternative begins with "put them back in their original context." And yes, it is possible to at least get a conditional/working sense of the original context. That's what archaeology is for, right? Hurray!
It then goes on through "Evaluate whether, and if so how, that context led to our present state" to "Decide whether that state is good and if so how to preserve it, or if not, what parts of history are we doomed to repeat?" Or something along those lines. As you say, "...so we're off to build something that suits us better." That's a lot of work, both physical and mental. I kind of enjoy it, but apparently most folks don't. Present company excluded, of course.
My cynical side is constantly bitching about how moving over pretty much overwhelms moving on, which massively blots out the very little moving-to-someplace-truly-better that manages to squeak in now and then. But I'm an old curmudgeon.
;^)