The national anthem should unite the country and take pride in our historic royal family, but in this day and age not many people understand the anthem. The national anthem could be used in times of crisis to show unity and bring back the British spirit.
You may be interested in these active petitions
In the United States of America most people know there national anthem or have at least been taught it. In France they are being taught it. A country such as our own should also be proud of our national song.