@HawkinsLabsColdwarEra
First, they provide a focus for national identity, unity, and stability. The monarch acts as head of state in a non-political role, offering continuity through traditions like the State Opening of Parliament, Remembrance Sunday, or Christmas broadcasts. This helps unite people across divides, especially in tough times, and gives a sense of shared history and pride.
This is a matter of opinion. All of those events you specify, would happen with or without a Monarchy.
Your paragraph on tourism is a total myth. You know that really, but it is a favourite of royalists.
No one comes to the UK expecting to see a Royal. All our historical and stately buildings and palaces would still be there if there was no Monarchy. In fact there is an argument that revenue would be far exceeded if the 29 royal estates, palaces, and buildings owned by the Crown Estate which, incidentally, is not the Monarch's private property, could be opened for tourism.
Royal patronages. Have a careful read of this. Having a royal patron does not help a charity apart from, perhaps a feel good element. It doesn't increase donations, and more often than not Royals are not even involved with the charities they are patrons of!
https://giving-evidence.com/2020/07/16/royal-findings/
Finally, on the global stage, they deliver soft power and diplomacy. State visits, hosting world leaders, and Commonwealth ties build relationships, open trade doors
That worked well for Andrew didn't it?
As for finances, I would be here all day if I answered that question. Just think of the poor cash strapped councils who have to shell out for security when a Royal turns up for a PR exercise. Security is an unknown cost be thought to be up to £150million. There is far more I could say on this but I am trying to be brief.
many argue the cultural, economic, and diplomatic returns far outweigh it.
Who are 'many'? Who are these people? Polls which are oft quoted on here show support for the Monarchy at 62%. Bear in mind that is 12 points away from half the country not interested in them.
You seem to argue that monarchy is essential to tradition or cultural identity. But national identity is not static. Countries reinvent themselves all the time—through art, values, shared history, and civic pride. A nation can celebrate its past without needing a hereditary institution to define its future.
Please don't bother to pick apart my answers. It's boring for everyone else and this way, we have both had a chance to put out our lengthy arguments. And we can agree to disagree in a polite manner if we stop now.