The thing about our current experience with monarchy is that it's only the last few centuries in terms of the thousand years we've had monarchs that you could describe it as a system of "take a random family put them on a throne give them plenty of land and money and status".
Before the 1800s being a monarch meant fighting, violence, bloodshed, betrayal, executions. Female members of the royal family being horsetraded into other royal families with no say, males having to lead troops into battle, always looking over your shoulder in case one of your own family members was going to kill you and take the throne, fighting off foreign powers.
The current royals can't keep their position by anything but public will - we have all the tools to become a republic if we wish without having to execute them or raise an army.
However, as PPs have said we have our own modern day version of it - people with power and money are fighting for resources and more power - water, air, space, data. The old style European monarchs have evolved into for the most part (very privileged) public servants and stewards of the lands they are responsible for. The new monarchs have no care for anything but their own personal wealth and power - a bit like the pre 1800 monarchs. Trump, Musk, Putin, Zuckerberg, Bezos etc use the world like their own playground.
And we can see that even what was supposed to be the most powerful democracy in the world couldn't stop them placing their puppet in the presidency.