As sure as the sun comes up every morning, packages need to be delivered. If the packages don't make it to the truck on time then how are people supposed to get the unnecessary things they order from Amazon? With online shopping at our fingertips, this position is more important than ever.
Millions of people are depending on you to get their package to them in a timely fashion. Your job is to make sure packages are placed in the right places so that they go out on time. There is a bit of training on the job, but for the most part there is no formal education requirement. If being depended on by lots of people doesn't stress you out, then you should look into becoming a package handler.