I know what you're saying. But.
I wasn't a man at 12 when on my first visit to London (I wasn't brought up there, I moved there later) I had a knife pulled on me on the underground. I talked my way through it - then ran.
I'm not a man who can run for sweet FA now. I have a debilitating disease of the arteries in my leg. This still does not make me wish weapons were legal. It does, of course, mean I know what vulnerability can mean and I act accordingly. But that doesn't mean I stop doing shit. Outside of the USA (which I just can't speak for having never been) the world is generally not a scary place with funny little black, brown, yellow, or white people waiting to pull your arms and legs off. I still travel the world and go to unknown cities - without fancy expensive tour guides - and, even with my disability (for that's what it has become now) I do not scare or see reason for arming myself anywhere I've been in the world. You wanna know the two places I've been where I have felt uneasy?
Colombia - where the army and police walk around pointing sub-machine guns at you all day.
And the Philippines, where even the fucking doorman (and I'm NOT making this up) at MacDonalds has a freaking sub-machine gun.
And it ain't the people they are armed against who worry me. It's them. Why the fuck does a MaccyD's need a doorman with an SLR?
Besides that the world is a beautiful place full of, vastly full of, good natured individuals like you and me who just want to help, not kill.
The USA is paranoid and armed to the teeth. This may be the reason I've yet to visit your undoubtedly beautiful country.