That's all logically correct, but emotionally wrong.
It seems to me that the monarchy provides a national focus of permanence for people to come together untainted by political allegiance or whatever. And that is a very good thing I would suggest.
Take this week-end, for example. Can you think of anything else that would have drawn so many people together in common purpose, even if that common purpose was just to enjoy themselves and have a good time?
I got thoroughly soaked at the Goring & Streatley street party - over a kilometre long and stretching from Berkshire to Oxfordshire - and it was lovely being with so many of my neighbours who I rarely see day to day, all enjoying ourselves despite the weather and entering into the spirit of the occasion.
God save the Queen, I say
jon