And equally, offering up an example of an unsuitable leader Nanny27, when countless other posters have done the same thing, countless times, in countless threads, not a valid argument. It has been addressed countless times in GN, but every time it comes up the poster saying it thinks they've found the perfect answer to sticking with a monarchy. But I'll address it again.
An elected President would not be a direct replacement for a monarch, or a prime minister. It's an opportunity to reframe the role of a UK Head of State to represent the people of this country and to take responsibility for defending their rights. This is what Heads of State do in other countries. Presidents are not all in the mould of those in the US or France, this is important to understand.
Perhaps we would vote for another Johnson. If that's what the country wants, that's what we get. Or perhaps we could find someone like Zelensky. In democracies, you get who you vote for. Then if the population later think that person isn't good at the job you vote for another person next time. And next time is 5 or 7 years later, not 70 and we don't have to wait for someone to die, and we don't expect someone to do the job until they are 96 years old.
If you use the argument that we might end up with someone you don't want, basically you are saying you don't think we should have a democracy and people shouldn't be allowed to choose what they want.