How do people who are so keen on guns explain away the fact that in countries like the UK we haven't all been killed due to the lack of gun ownership
They don't.
You also need to know that "gun control" in the UK is a relatively recent phenomenon - being gradually introduced in the 1900s. There is a newspaper account in the London Standard from the 1920s, where a robber snatched a bag and ran down Piccadilly several passers by offered the pursuing constable the use of their revolvers
I said before. I am a libertarian. I believe the state should butt out of peoples lives unless it is to prevent very real harm to innocent citizens. (I don't agree with the current drugs laws, for example). However, even with all that, for me, strict gun control is a no-brainer. I am not sure if they can be made any tougher, but if they can I'm all for it.
The bottom line is - irrespective of political standing - most UK citizens agree with me that they don't need to own a gun.
Incidentally, my DB lives in the US and has never owned - nor fired - a gun.