

I think taking a broad view, there are quite a lot of constitutional monarchies that are really great places to live (Sweden, Denmark, Norway, New Zealand, Canada, the Bahamas, Japan, to name a few). There are also quite a lot of republics that can claim the same. So, from a sort of human development POV, I don’t think it really matters very much.
[EDIT: Should’ve added that there are also plenty of republics and monarchies that are disasters, too. My point is that there’s no consistent pattern of one works and the other doesn’t.]
Sure, monarchies are a bit daft but I think ‘if it ain’t broke, don’t fix it’ is quite a good rule. Especially since spending time on fixing things that ain’t broke is time you could be spending on fixing things that are broke. I live in the UK and we have a lot of major problems that need our attention. It’s better to focus on those than have a big argument about the King when, as we can see from international comparisons, the King isn’t really the issue.
Heh. Yeah, I can’t really hold up a country backsliding on trans rights as an example of an effective constitutional monarchy.