However, I think that from an architectural and art historical perspective, we can do more than just reconstruct the Cathedral exactly the way it was. Art and architecture always change with their cultural and historical context, and I think it's one of human kinds biggest strengths to create something new out of old or destroyed artwork.
A great example is the Cologne Cathedral Window, which the German contemporary painter Gerhard Richter designed in 2007, long after the window had been destroyed in World War II: https://www.newyorker.com/magazine/2008/05/12/many-colored-g...