In today's era, not owing money, not overdrawing, and not living beyond your means are already considered very sensible.

Having no debt doesn't necessarily mean they're earning an extraordinary amount.
It’s more likely that this person is living steadily, spending wisely, and not feeling anxious.
Having savings in the bank gives a sense of security that is truly worth much more than superficial appearances.
Many people seem to live well, but behind the scenes, it's all bills.
In fact, those who are debt-free are the ones who are truly relaxed.