Dave1971 said:
I could understand that if it was a high value item but its really not!
Well, there's a cautionary tale behind my sarcastic response;
Years ago when I was living in Ilford as a student I advertised a CD player for sale in Loot (is that paper still going?).
I got a call from a gentleman who offered to come and pick it up with the cash, so an appointment was made and he rang the doorbell of the student house the next evening. I could already see who was standing outside and saw a short, chubby-looking guy of let's say 'West Indian' appearance. Now having lived in various questionable abodes in Liverpool since I moved away from my parents house at 16 I had learned via experience to take precautions, in most cases having a small ball hammer or other heavy object within easy reach of an ajar front door (not claw hammer - they have a severe legal ramifications and count less as a viable self-defence weapon when faced with a charge of ABH when presented by the prosecution unfortunately).
Anyway, as soon as I opened the door he grunted if I was the person 'sellin da cd player bro?' while craning his neck to look behind me, presumably to establish as to whether I had a team of kung-fu specialists or such present in the house. I didn't. There was me and a couple of girls from Uni out of the usual 7 residents. I replied 'yeah 50 quid mate' whereupon he produced one of the largest knives I have ever seen and started to step towards me. Having noted his particular demographic I already had my hand gripped firmly around the handle of aforementioned pean hammer and managed to bring it swinging around in one swift deft blow to the side of his head, stunning him momentarily enough to cause him to fall to the ground whereupon he somehow mysteriously managed to break his arm and sustain some rather nasty grazes to his face and extremities. Somehow I don't think he was expecting this response. 'And that's exactly how it happened Your Honour, I had noooo idea the gentleman behind the door had malicious intent while carrying the 1/2 metre long machete. I really thought he was an odd-job man looking for household jobs to do.'
That wasn't the only occurrence of violence, intimidation, tube-steaming and random attack I experienced whilst living in the East End. They're not all cheeky chirpy Cockneys over there unfortunately.
The point is; you open your door to a complete stranger, you open your door to unknown risk of variable severity.
That's why even living in the relative calm, subdued nation of clog-wearers I still never automatically open my door, favouring a CCTV and intercom for people I don't recognise.
Paranoid? Fair point, maybe, but why take any risk?