One-Punch Man draws a very real parallel to how we feel about our abilities today. Saitama knows what he is capable of and has trained to the point of being untouchable. At the same time, no one knows what he can do, and no one appreciates it.
Worse still, his abilities no longer bring him joy anymore, he’s simply too good and it’s all too easy. He’s searching for what we all are — a purpose. This is relatable television with a message at its best, without being preachy — just good old entertainment.