Quote Originally Posted by MacMillan of Rathdown View Post
Today the dirk has generally fallen out of style, even though many books will tell you it is part of "white tie" attire. The reasons for this seem to be (1) Cost. The last full dress dirk we made at Wilkinson Sword went out the door for nearly thrice the cost of a new basket hit broadsword (over 2,400 GBP). (2) Fashion. Because of the flood of cheap and nasty dirks on the market what used to be called "gentlemen of quality" stopped wearing them because dirks had become something of a hall mark for the "Braveheart Boys".
As well as the fact that in general society people don't go around wearing weapons anymore. Only in very specific circumstances would one be appropriate.