Do people actually believe that the royal family has "blue blood", that they are in some way different from the rest of us and that they have special qualities that entitle them to be revered?
What are the origins of the royal family? Offa, King of Mercia, became the king by conquering other kingdoms. So, don't the members of the royal familiy originate from people who simply fought their way to power and imposed their will upon the population?
Furthermore, they have not set a particularly good example throughout the ages - brother plotting against brother and sister against sister, murderous plots against children, executions and treachery - more reminiscent of the mafia than of people who have the intellectual and moral qualities necessary to equip them to be held in high esteem by others.
Why are so many people prepared to bow and curtsy to somebody who is no more or less than an ordinary human being? If it is simply a matter of tradition, then perhaps we should review the relevance of a tradition that originates from times that were mindless and brutal.