There are many benefits of Monarchy. The person of monarch is trained to become a head of state all his life, he is aware of what he can and cannot do, and he represents his country well. You dont get many gaffes from Royals, and look at Presidents around the World. Further Monarchs arent politicians they arent trying to be populist or popular they do what has to be done, there is no such thing as corruption etc. etc.c
They are icons that are able to unite a nation, again President is more of a politcian, uniting mainly those that have voted for him.
Monarch does not constipate the Political system, theoretically he has huge powers, but in Practice all the power lies with the Prime Minister, which is good , things get done and only one person has to be scrutinised. Head of State is not blocking Parliament, by vetoing.
