<Snipped quote by harinezumikouken>
This man understands. I had a teacher in high school who never used one and his tie was always flopping around or twisted backwards.
Never wear a tie without a tie bar or clasp. Keeps you from looking scruffy.
Well, my habit of wearing tie bars or clasps stems from my time in service. It's a required part of some of our uniforms. However, when I saw how ties (*hellacious snakes) act without them, I made it a point to never wear a tie without one. It just looks stupid and unprofessional.