I dont think arguing for a President or a monarchy is arrogant. Its more what each is used to or preferrs. Neither one is right, and neither is wrong.
I would hate to have a President, I much prefer a PM who has to ask the Queen every time he wants to do something. But others think that is a waste of time, why have the Queen there? Why not just remove her and let the PM make all the decisions?
Its a battle that neither America nor Britain will win. The reason is that we are both right. We both have what we think is best for us.
Long live the Queen.
I never once compared the monarchy to our system of government. I was accused of not knowing why I dislike monarchs, simply because I'm American. I know dam well why I don't.