Even if what you say is true--and I have real doubts that it is--I would not go anywhere where I could not protect myself with a firearm. Consequently, I now restrict my traveling to the USA, which has loads to offer.
My honeymoon was spent in Scotland in 1971. And while there, my wife and I thought that the the idea of unarmed police was "quaint"; we were too young and stupid to realize how dangerous such a practice was and still is.
I think thats paranoid, silly and sad, but I respect your right to do so.
3 million Americans travel to the UK every year, without being raped, murdered. Another 160000 live here as UK citizens. Again, the vast majority without any problems.
You want all armed police and find it safer. We dont and find all-armed unsafer. The UK is still a country with low levels of major/serious violence and all-armed police is not necessary. You find that dangerous, I dont.