As I said, I think we have a little too much democracy these days. Notice how the British system functioned reasonably well up until the 20th century? Granted, that was in part down to Victoria having a twenty year long fit over Alfred and thus squandering much of Hanoverian royal power, but the point remains.The Parliamentary Monarchy of the modern day is a vastly different beast than it was a hundred years ago. The monarch had actual power/authority in the state. Now its basically a Crowned Republic. The monarchy is a powerless figurehead unable to use its constitutional powers. The Queen now has to sit helplessly watching while the incompetent Parliament runs continues the country into the ground.
While I'm not really a monarchist, I'm partial to the idea of an executive Constitutional monarchy where the King/Queen actual governs with the government actual is HER Majesty's government.
Personally, I see nothing wrong with a powerful monarchy that can actually do stuff. After all, a King or Queen is likely far better educated in statecraft than a career politician who rides to power on broken promises. Not to mention they have ancient roots in their Kingdom, which gives them a stake in its future.