Procrastination
Procrastination demonstrates remarkable persistence against all countermeasures. The self-help industry generates approximately $11 billion annually in anti-procrastination products and services, yet procrastination rates have increased rather than declined over the past three decades. It has outlasted every intervention designed to eliminate it.
On the individual level, procrastination survives therapy, medication, productivity applications, accountability partners, and stern self-lectures. It regenerates within hours of apparent defeat, returning with renewed vigour upon encounter with the next unpleasant task.
Knife
A well-maintained knife can function effectively for centuries. Archaeological specimens demonstrate functional edge retention after millennia of burial. The knife's durability derives from elegant simplicity, a wedge of hardened material requires no software updates, battery replacement, or motivational support.
Japanese swordsmiths have maintained family traditions of blade-making for over twenty generations, with individual blades passing through countless hands whilst retaining their essential utility. Given proper care, a knife approaches indefinite functional lifespan.