My family did it when I was younger: our dining room table had matching side chairs all around it, except for the position at the head of the table. That one was special, with arms, and it was where dad sat. I always thought, "Hmmm, dads just need arms on their chairs.":
Today, my dinner table is more equal opportunity than that: all of the chairs are the same and none have arms. Yet I can't help but admire a table where the head (or heads) are bestowed with a touch more comfort.
What about your dinner table? Are there arms or no arms at your head chairs? If you have armchairs at the head of the table, who gets to sit there?