Having worked for the Postal Service many years gives me perspective on the duties of employees in many of the craft areas.
In the eyes of the public, it may appear to be an easy cushy kind of job that any idiot can do. But, they do not see all the work of so many to get one of their letters or packages to its destination.
Sometimes, postal employees are treated somewhere between being a child and a slave, are always expected to have a high level of expertise, be willing to sacrifice personal time with commitment, have the ability to handle tough situations, and not be afraid of hard work.
It is a challenging job that tests the limits emotionally and physically.