You don't HAVE to answer the door, or the phone, or whatever..
But then to come and ask us who it might be.. how do we know?
I don't often answer if I am here by myself because I'll have to get my chair out the room, get the dogs back IN the room, shut the door (it opens the wrong way for me so thats a faff), then point the right way down the hall..
Then I have to get to the door which is a tight fit, and back up super slow again to actually open it, by which time most folk have fucked off thinking no ones home.
It can be done, but I'll usually only bother if I am expecting a parcel I really don't want stolen from the porch.
However I don't get so worked up about who it was or why and need to post here, if they wanted me, they'll come back or they'd leave a note.
Random callers of late have been:
Parcel for next door
Police asking if someone of X name lives here - no they don't (they were trying to inform someone of a death :( )
Pizza/McDonalds/Kebab for same number, one street over.
Bloke asking if he can have the fishtank in our front garden (yes mate, thats why its there).
Someone asking if the dead cat outside is mine (nope :( )
Gripping stuff eh. Just think what you could be missing.
If it really bothers you, get a ring doorbell and answer without opening the door?