i have never said you shouldnt leave yor handgun in your car because i firmly believe that it is wise to have 1 if not 2 handguns loaded in your car at all times. and being able to legally have a loaded shotgun and/or rifle is a tremendous bonus.
me personally, i cant see needing one for a self-defense situation unless the rapid breakdown on society has begun and there is no law enforcement, only martial law(maybe) but probably not. most will carryit either because they simply want to (and that is PLENTY of reason to do it) or they live or travel to a rural setting frequently and it could possibly come in handy for whatever reason.
or maybe you are a vigilante soldier looking for a battlefield, you ever think of THAT?! [/sarcasm]