Our current mail man is the perfect picture of an angry, disturbed person. He has not yet gone "postal", but if you say "hello", he just gives you the "dead fish" stare. Has been on our route for about 10 yrs. Perhaps he is just deaf and mute? Not!
I was raised in Oklahoma City, and we had the same postman for 30+ years. He was on foot with large bag, and was always smiling. He knew everyone and was well liked and trusted.
Times have changed--I never place mail of value in the mail box, as we have been witness to mail robbery. As we watched someone drove up to our box and quickly removed a letter with a check enclosed. Reported it to the police and and was told to call and report to postal service since it was a federal crime. Did so and was then told that the postal service had no ability to go after these folks. I did not have a license number to investigate anyhow. Now I pay all bills on line, or take them to the post office.