"Never, ever leave home without it." No, not your American Express card, your sidearm.This morning, I woke up about 4:15 and was hungry, so I decided to drive to the local 24-hour beanery. The only other customers were a table of 10, intoxicated 20-somethings making alot of noise.There were 7 muscular young men and three loud-mouthed young women. After listening to their raucous laughter for 10 minutes, I politely asked the waitress to ask them to hold down the noise. All I wanted to do was eat my breakfast in relative peace.Her request for quiet lasted about 45 seconds, then...