>>>>Lighters are one of the few things it actually makes sense to restrict on planes, since they can be used to make flamethrowers (with any aerosol can) or to light fuses on explosive devices<<<<

And you can't do that with matches? It's nothing more than paranoia. In order to eliminate any possibility of an improvised weapon of any sort people would have to travel naked while sitting unsecured to the deck of a cargo plane, and even you don't know that the guy next to you hasn't infected himself with some highly virile biological agent. The deadliness of any object around you is limited only by the imagination.

My $0.02

Ed