I don't answer a door unless I think it is safe to do so. If I suspected a danger outside I would leave the deadbolt on and call 911. If I felt I was in danger I might get out a loaded gun while I waited for the police to arrive. I cannot imagine unlocking my door if I thought the situation required being armed.
So your are against CCW? A lot of people unlock thier door in order to go to dinner, to a movie, etc. while armed. Are they all crazy? I don't agree that people can only be armed if they lock themselves in thier house.
If someone wants to check out a strange noise on their property and they decide to do it armed rather than unarmed I don't see why that is such a bad thing.