Ours in Illinois is great, but I just love the wording of Montana's: "...permitting the home production of beer in Montana so long as such activity is within the federal statute recognizing the production of beer for family use." Other western states have similar things.
Basically - hey, look good laws exist, lets leave it the **** alone!
The only reason I got it was because I was hired to teach a brewing class and it added just a bit more visability. It would be tough to play dumb when the class outline included "legality of brewing". I'm pretty sure none of the members in my home brew club have the permit. Think about it, you're actively telling the state.. hey, look at me, I'm brewing.