I'm sorry to hear that I come off as a mall ninja (I'm not surprised that I do to be honest). Believe it or not, I agree with most of your post, however (I may be wrong) but it sounds like you are under the impression that I said a knife is the be all end all SD weapon.
Allow me to elaborate:
you are in DC where you are allowed to carry a gun. Even with my limited fighting knowledge I know that a gun will make a much better SD weapon than a knife. Using a pool que or a baseball bat would also probably make a better weapon than a 4 inch knife (I fully agree with the first part of your post). However, unlike you, I wasn't in the military and being in Australia, I can't get a concealed weapons permit (think of it as UK laws gone wrong). I don't drink and have never been in a bar so I will take your word on the bar fight thing. What I mean to say is: if someone were to attack me with a weapon I would run for my life (or throw my N97 at them and hope it hits them in the head

). If running is not an option and I had my back to a wall, I certianly wouldn't mind having a knife in my pocket - Which is what I have been trying to get at since my 2nd post (got carried away on the first post).
Regards
Herr Noobien
EDIT: If were to get into a fight, it would either be in uni, or in the street. Most people in uni and most people on the street here don't carry baseball bats and chair legs. Also, better knife fighter? HAH! Like I said, running would be my first option and chucking my brick phone at their heads with the hope of knocking them out with them would be my second option