I don't think the UK is perfect; politically, it's hanging by the skin of its teeth. Look at the NHS. God only knows how long that's going to last! I'm amazed it's gone on this long!
What I am saying is, monarchy v republic: just what is the difference, except hereditary? UK, Denmark, Norway, Sweden, Netherlands, Belgium, Monarco in Europe are all monarchies and they thrive for one purpose: because the majority want them and are used to them. No more, no less. They are paid representatives and no more.
BUT they are not absolute, meaning they hold no power now. Click our fingers and they'll be facing Sue Townsend land. In the past, in the UK, with your Richard III, for example. they were the absolutes. They were soon sorted out. There was a spell of republicanism with Cromwell. That didn't last long. Look back at UK royal history and see how bloody complicated it is. Our present royal family descends from bloody Germans FFS.
There has been British brutality, the example of India being a prime example on a par with Naziism IMO; since then, no. The empire has dissolved and quite rightly.
Those in the royal family are born into it and it's not their fault. I saw a short programme on BBC News yesterday called Witness. They interviewed the ex-King of Bulgaria who was exiled and became their Prime Minister ten years later. It was a shame what happened to him and his family and it was all down to Bulgaria being annexed by Russia after WWII, then the wall came down, so he was able to return, form a political party and call himself Prime Minister when he was democratically elected (but not king). In the same programme Princess Olga Romanov of Russia was interviewed after her uncle the Tsar Nicholas' and his family's remains were found and reburied in 1998 and she attended the funeral; although Russia is a republic she has the right to retain her status as a princess, although I believe she cannot claim to be a royal, though judging by Wiki she lives comfortably. She was absolutely distraught and why, because she knew no other way of life.
You are what you are and born into what you are born into. Them's the breaks.