Okay, I hope this is the right group to ask this in; I've been haranguing my wife about this, and she teaches high school English -- it's not in her wheelhouse.
So if you look at any other primate beyond humans, their hair doesn't grow all that long -- at least not in comparison to humans. Orangutans seem to get the shaggiest, maybe a foot-long at best.
But orangutans don't compare to most of the women in my apartment complex with hair down to their mid-back. I've had two-foot long hair, and my wife has had hair nearly to her butt. I saw a guy from India the other day who had the world's longest beard.
Question: Of what use is having hair that grows indefinitely like that? Was there a time in human evolutionary development where it didn't grow as long, and after we figured out how to sharpen a flint and shave ourselves it started to grow longer? Or does the hair of other primates just break off before it turns into Rapunzel?
Because I get the warmth/protection factor, but it seems like having hair that could trip you while running from danger or after game seems more of a selective disadvantage than advantage. Our woollier ape brethren whose hair only seems to grow to a certain length seem to have a step up on us here.
Or is there some use for five feet of hair hanging down to your knees that I clearly don't get?
I understand that cutting hair will make it grow faster, but that doesn't mean as soon as people started cutting their hair that it started to grow longer -- just look at people who never cut their hair. Did we all just run around in dreads at some point?