Here's why:
* They are vestigial: These hairs are remnants from our evolutionary past. Our ancestors had more hair, and it likely served purposes like insulation, sensory perception, or even communication.
* Limited sensory capability: The hairs on our hands are not as sensitive as those on other parts of our body, like our head or face. They don't play a significant role in sensing touch or temperature.
* No practical use in modern humans: In the modern world, these hairs don't offer any significant advantage. They don't provide insulation, and they are too small to be noticeable in day-to-day life.
So, while they don't have a specific function now, they are a reminder of our evolutionary history!