Right, but your family home is likely insulated to at least R-13 in the walls and R-38 or better in the attic while an all-glass skyscraper is probably somethin

Right, but your family home is likely insulated to at least R-13 in the walls and R-38 or better in the attic while an all-glass skyscraper is probably something like R-2. A tall & thin skyscraper also has an uncompelling surface to volume ratio.