Fascinating discussion.
For me, the most fascinating part was the way some of the comments got personal. Maybe this derives from the fact that so much of the architecture of Europe that we visit and admire is older than our New World nations and any of the structures we've built here. If we are of European descent, we feel like these edifices are part of our heritage. And structures like the cliff dwellings of Mesa Verde (which are much older than our nation) aren't our heritage unless we are of indigenous descent.
I understand why people want to preserve this heritage. But I've also seen fantastic examples in Europe where the modern has replaced the ancient, to excellent effect. Coventry Cathedral in England immediately leaps to mind: it's one of the most moving places I've visited in Europe. Rotterdam is another great city where the old was replaced with something completely new. And in Paris, the Pompidou Centre
Ufkak, I also get where you're coming from. There is often a silly desire to preserve heritage, as if what something used to be is somehow better than what we could make it today. And the fact is that throughout history, that kind of reverence for the past was not of particular value. Architectural updates were frequently made in the style of the present day. This is why you have many cathedrals in Europe with various styles. If you've been to Lisbon, you may have seen the cathedral there, with elements of Romanesque, Gothic, Baroque, and Rococo architecture. Does that make it any less authentic, or any less beautiful?
I happen to think the alternative designs depicted in this article are fantastic. (Well, the swimming pool idea, maybe not so much; I mean, you wouldn't even be able to see it from the ground...) We don't need to be iconoclasts, but we also don't need to cleave to orthodoxy.
I'm open to change. But I also think architecture, like painting and sculpture, is worthy of preservation, restoration, and admiration.