Let alone its constitutional and religious significance as an indispensable part of the installation of the new head of state, the coronation also matters because it offers a unique opportunity for Britons to celebrate their cultural inheritance and patriotism. Fully-fledged state events like this one highlight all the jewels of the British arts to the world's admiration and display the nation's pride.
Instead of this costly, medieval parade to put a hat on the head of Charles, Britain should have an election to let the people democratically choose the head of state. This ceremony is a reminder that there is no such thing as a modern monarchy, as the royals will keep recklessly spending taxpayer money while enjoying all sorts of exemptions and privileges.
There's a 14% chance that King Charles III will abdicate the throne of the United Kingdom before September 9, 2032, according to the Metaculus prediction community.