Earlier quoted context omitted.
Does anyone here really believe that when your life is imminent danger that you are better off with a cell phone in your hand calling the police and waiting for them to arrive to save your life than you are with a gun in your hand using everything you possibly can to protect yourself and your family? In the UK, yes we really believe this.
And is the average response time of a police officer to your home, less than a minute, everywhere in the UK, any time of day or night, regardless of any other circumstance? If not, maybe you lot should reconsider your irrational fear of guns. FWIW, the USA is much larger than England, and some of our rural areas are very rural, so it's hardly an apples to apples comparison... but just to illustrate a bit: I was a 911…
In any case, what "police exist" to do depends very much on the jurisdiction they serve in. The situation outside the US is very different from the one inside the US. Please bear that in mind before asserting that your interlocutor has an "irrational fear of guns".