Historic windows are an important and contributing feature to a historic home. Remove them and you are decreasing its historic and aesthetic value.
The removal of historic windows and installation of vinyl replacement windows is a rampant and discouraging problem in the United States—predominantly due to the slick marketing and overblown promises that come from flyers, sales ads, and convincing salespeople.
Vinyl replacement windows have a very short lifespan when compared to historic wooden windows. The “savings” that homeowners are promised won’t be realized before replacement is likely needed.