I too, dislike the idea of incredibly large prints. I would like to think that very large prints suggest a real lack of imagination on the part of the photographer. Consider the 2 meter square print. How many "normal" size prints would you be able to show in the same running feet of wall space? It would require more talent and skill to create a series of smaller prints that would more clearly and completely state the photographers ideas about the subject. Which is more difficult? One big print, or several smaller prints.
Another issue that bother me with very large prints is viewing distance. You must be far away from a large print to see it. Where is the connection between the art and the viewer? My preference is to be close to the artwork to see the details and craft of the image. I can't see that if I am thirty feet away from a picture.