The polite thing to do has always been to address people as they wish
to be addressed, to treat them in a way they think dignified. But it
is equally important to accept and tolerate different standards of
courtesy, not expecting everyone else to adapt to one's own
preferences. Only then can we hope to restore the insult to its proper
social function of expressing true distaste.
-- Judith Martin, "Miss Manners' Guide to
Excruciatingly Correct Behavior"