Going bald and feeling ugly

I know a lot of us feel less attractive when we start losing our hair but I was wondering the other day exactly why that is. I mean, I know we're culturally conditioned to think of hair loss as a negative thing but where did that come from in the first place? Is it an unwelcome reminder of our mortality we'd rather do without? Is it something in our genes from the dawn of human civilization which equates lack of hair with something to be afraid of? Answers on a postcard to the forum!