I did not suggest that. Fact is: you can not defend yourself unarmed against an armed crook. If you can, well congratulations, you are a magician.
Your assuming all crooks will murder you as soon as look at you, most criminals will try to AVOID shooting anyone as much as possible, as that elevates the crime to a level where they are looking at serious jail time, this is the way it goes, armed intruder(s) comes in, I am shocked but aware what is going on, I tell them I am no threat, discover what it is they want and tell them to take whatever they want! They take what they want and leave, I am shaken up and in mild shock, the crook gets what he wanted. The crook (s) leave, I ring the police and report the crime, I spend a sleepless night and the next day I ring the Insurance company, that's how it goes down. Now, if I (unarmed) attempted to tackle armed men, I must likely will get injured, but the crook would still prefer not to kill me (remember, he's thinking worse case scenario if he gets caught, he wants the charges read out in court to be minimised and the least serious).
Now if I have a gun on the other hand, all of a sudden, an incident that is frightening but easily survivable if read correctly, has now become deadly, and depending on how much homework the crook(s) have done, and how many crooks their are and other factors like weapon skill level and the like, the situation has now become potentially deadly for all involved, the crook will almost certainly want to kill me now, and even if I manage to kill him, the whole ordeal will now be a whole lot more stressful for me, I will have to deal with the Police, Court rooms, Judges and a whole host of other issues, rather than some sleepless nights and a cheque from the Insurance Company.
I actually think must Gun owners have some superman complex and fantasize about being a HERO.