Quality materials and superior craftsmanship, combined with proper care and lack of abuse can yield a tool capable of making the difference between survival and death and lasting many lifetimes.
A good knife is a perfect example. These 2 are as nice as the day they were made and still hold their original edge.
On the left, 10,200-12,500 years and on the right 8,000-9,500 years. Good for the largest big game as well as the most dangerous predators of the ice age.
The size reference coin is a silver dollar size casino slug.