To put it simply, being a safe, defensive driver means that you as an operator are keeping yourself and others safe. That is the most important reason why defensive driving is important.
That said, there is also a financial benefit to remaining safe on the road:
- Reduced risk means less accidents / incidents
- Fewer incidents means lower insurance costs
- Avoid public perception that your company does not operate safely
Regardless of the return on investment for being a good defensive driver, the most important thing is keeping yourself and others safe.