I don't care, abolish the monarchy
As the leaked diplomatic cables show, the monarchy is still an important source of soft power for Britain: heads of state in other countries attach great value to a visit from the Queen or Prince Charles, or a hunting trip with one of the other princes. Having girls all over the world drool over Princes William and Harry can't hurt either. Thus if I were British, I would support retaining the monarchy for this purpose. I would be a staunch republican if I lived in Canada or Australia, however.