It is through communications people learn about challenges, how people are different, yet same, and how we're all the same - in the end. Episodes, such as this one, help us accept and understand people who are different and who have nothing shameful in their lives.
In this episode a man so ashamed by the fact he is a diabetic has been keeping this information from his own wife. How - fortunately - times change, but if it wasn't for episode, such as this one, times would change. I suspect some readers will be saying, but how can they not be accepting of something as simple as a person being a diabetic, but honestly, there were times when it was a big deal and a big negative in the eyes of many people (and not so many years ago).
The episode teaches those of the '50s/'60s an important fact, while giving us a warm and wonderful story. It is a well spent 30 minutes for anyone.