AureliusHair probably had an important function at some point in human evolution but now it's mostly cosmetic
Annoyed_🦀 It still are there to protect our scalp and skin from sun burn.
I considered that too. I suppose it could help on top of the head. But how about body hair?
empireOfLove2Body hair is vestigial fur that used to help with thermal regulation (insulation against both hot and cold) when dense enough.