What is the main function of nails?

The primary function of nails is to protect the tips of fingers and toes. Nails are made of a hard protein called keratin, which provides a tough covering over the sensitive areas of the digits. This protective function is crucial, as it shields the underlying tissues and nerves from injuries and external elements, reducing the risk of infections and damage. Additionally, nails help enhance our ability to grip and manipulate objects, further supporting their role in everyday tasks and activities. While nails can have aesthetic value and may also contribute to sensory perception, their main purpose remains protective.