The wise man says that a pound of prevention is a pound of cure. Knowing that most of the time the money and effort spent to prevent a problem, is far less than what would be required to clean up after a disaster is made.
But have you ever considered how this wise saying might change if you were the one who benefited by cleaning up or replacing what was lost in the said disaster? If you knew that your pocket book had a high chance of benefiting from ignoring that wise piece of advice, would in not be tempting to say an ounce of prevention is a pound of time, while an ounce of repair may never happen saving you so much energy and time.
Maybe that is why it is so important to consider the source of a saying and the potential outcome of following it, rather than instantly taking it as a worth its weight in gold.