It is very wrong for people to feel deeply sad when they lose some money, yet when they waste the precious moments of their lives they do not have the slightest feeling of repentance.
We should be careful to get out of an experience only the wisdom that is in it and stop there lest we be like the cat that sits down on a hot stove lid. She will never sit down on a hot stove lid again and that is well but also she will never sit down on a cold one anymore.