What do you believe windows are for? Letting light in? A place to put curtains? A way to let fresh air in?
Personally, I think windows are a way to open up your interior space to a view. A great view, whether it’s a city skyline, crashing waves on a beach shore, or the 18th hole on a golf course, can serve as art work for your home. These images are some of the places I’m wishing I could have as my viewpoint. Wouldn’t you love to look out your window and see these places every day?
While you cannot create a view, you can draw attention to it. Make your window with a great view serve as the focal point of a room and design the room and its layout around that view. The colors that are in this view (for example, the blacks, blues, silvers, and greys in a city skyline view) could create the color palette used in the room with a view.