Lots of people love them, elderly people get very angry if you even question the morality of forking out 300 million a year to keep in power the descendants of the people who terrorised and oppressed our ancestors.
More and more young people are questioning it but people either support them or see it as not a big issue in the grand scheme of things. People are also told the monarchy generates more money than it costs the taxpayer to pay for them, but this is because the figure the government gives out does not include taxpayer costs for their security, transport etc.
It comes to around 300 million a year.
I personally find the whole idea of monarchy archaic and disgusting but republicanism and constitutionalist sentiment are not as popular as i would like.
There is a section of the new athiest crowd inspired by the likes of Chris Hitchens who would like to see us create a constitution and a republic. I would imagine it would be somewhat different to the yours. It would be tricky convincing British people that we should have the right to bare arms. I have never met a single person who thinks guns should be legal to own. I do and I am sure some republicans here do but it is hard to argue that our society is not much safer since we introduced gun control.
I would argue our freedom and rights to be armed in case of tyrannical government may outweigh the violence but the vast majority would say no. The main position would be I am more scared of some nutter killing my kids in a school than the non looming thread of a dictatorship. Plus because of gun criminalisation guns on the black market are extremely expensive. A semi automatic rifle on the black market here is tens of thousands of pounds. Which means even our gang members mostly don't have access to guns and even the ones who do have pistols and the like and armed police have mp5's.
It is the old security v liberty debate and honestly most British people are firmly on the security side.