Why Do People Stand in the Middle of Doorways?

Here are some suggestions for other places people could stand:

Just outside the door.
Just inside the door.
To the left of the door.
To the right of the door.
Well outside the door.
Well inside the door.

But no, the idiots-- I mean, the dear souls-- insist on standing in the middle of doorways, causing acute embarrassment to shy people like me who want to pass them.

It's a scandal.

Future posts in this series; People Who Leave Their Bag on the Seat Beside Them When the Bus is Filling Up, and People who Suddenly Step Backwards in a Crowded Thoroughfare.