Skylights make a room brighter and larger.
Unlike windows, they give you private views, which is especially nice for houses built on small lots. They also leave the wall space in a room intact. Several years ago, a popular and inexpensive plastic bubble was used by a lot of builders, but the plastic didn't hold up. Electric motors and rain sensors for vented skylights are also available. Today if a skylight leaks, it's usually because it's not installed correctly.