I am neither pro nor anti royal, however, I will say this.
One argument is that if we were to end the monarchy it would hit tourism.
Wandering round the summer palace in Beijing a couple of days ago, there were huge numbers of people, thousands, visiting the site.
The same would be true of the Forbidden City.
Now China hasn't had a royal family for over a hundred years, yet people still go to those sites. The same with the valley of the kings in Egypt or castles in Germany.
None of these places (and others) have had a royal presence for a very long time, but people, thousands of people, still go to them.
If we in the UK abolished the monarchy, would tourism stop do you think? Would it decrease? Would it even increase?
How much of a loss would it actually be to the nation, in £s, to not have a monarchy?