Why do we care so much about hair?

We talk about good hair days — and bad ones — as if they're small things. But for people who are losing their hair, it isn't small at all.It can feel like losing a part of yourself and learning, slowly, how to meet the new version in the mirror. So why is it that hair is so linked with our sense of who we are? And why do we pay so much attention to the hair of the people around us?