The important thing to recognize about the republic of the US, is that a lot of the constituion has been abused by the neo-cons, many of it's laws have been passed despite being unconstitutional.
So I agree with the concept of a republic, but recognize that it is open to abuse.
All you royalists out there might be interested in these articles:
The British Monarchy Has Its Roots in Nazism
Harry says sorry for Nazi costume
Touchy subject of royal links with Nazi Germany
Note the following:
The modern royal family was founded in 1840 when Queen Victoria married Albert of Saxe-Coburg, a Germany duchy, creating The House of
Saxe-Coburg-Gotha. Such was the ill-feeling towards all things German during the First World War that in 1917 Victoria's grandson King George V - an honorary Field Marshal in the German army -
thought it prudent to renounce the German name and titles and adopt that of Windsor.
It was a masterful PR exercise, replacing the Teutonic surname with that of a quintessentially home counties town.