Well the "kiddies" have moved from switchblades and the occasional zipgun to uzis and mac-10s.
Nah, just thinking protection in an increasing unfriendly world. Twenty or thirty years ago access was far easier to come by. Today, with most everything closed to trespass, floating is mandatory to find your few inches of space. There are some nasties out there ready to ruin your day, hence the kevlar Titanic.
The closer I get to the double nickles the more fond I become of my old hide. ...and the less immortal I feel.