A FEW YEARS ago I interviewed a postie about mail service. I told her that when I was a kid, a fresh bottle of milk appeared on our front step every morning.
In the evening, my mom would stuff some bills into the neck of a clean, empty milk bottle and leave it on the step for the milkman. Nobody ever stole it. If she needed extra milk or cream, she left a note and it would be there the next morning.
Nobody delivers milk to the doorstep any more.