Nicely put Orlando_Flyer.

The facts:
1. Nobody has ever been injured as a result of a shoe bomb.

2. There have been multiple incidents of loss-of-life due to terrorists opening fire in crowded, chaotic ticketing areas (Rome, Vienna, Los Angeles, to name a few.)

But the clever security screeners have decided to focus their attention the shoes. Sometimes I wonder if there is a blind donkey who makes all of the decisions related to airport security worldwide.