Self preservation is the reason I always wear spike high heels when I have flown since 9/11. I consider them as a weapon that I could use to kick someone, or take off and hit someone in the eyes/head. I also try to wear a good leather belt and have a pocketbook with a detachable thick leather strap.
I wouldnt't be the first to instigate a situation if I felt threatened; but if some ME goons started procedures to take down a flight that I was on I would want to at least attempt to help take them out. After reading the recent in-flight hi-jinks that occured with the Syrian musicians; it is important to think ahead what you could personally use to protect yourself if an incident occured mid-flight.
I tried to wear those heels once, but all I got were funny looks. :)
Something to remember; it only takes about 8 lbs. of pressure to rip an ear off. Grab at the top and pull sharply down.
Hmmm, good point all4one. I'm going to remember that before I get on a plane this fall.