With respect: crotch hair probably doesn’t seem to serve a purpose only because of clothing; interestingly clothing is both highly tied to Genesis and, if you believe Wyn Hoff, possibly not healthy?

Appendicitis is such a common childhood (pre reproduction) emergency that evolutionists struggle with how the organ could persist (modern surgery being a blip). Some think the organ persists as a deposit and repository for bacteria to reconstitute the microbiome (>90% of which is unculturable and cannot exist outside the human gut) in the event of a challenge. That’s a cool theory. I believe it.

The truth is probably something even more strange, even deeper, and something I could never guess

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But why only have “clothing” in the crotch area? It’s clearly not sufficient to survive without covering up the rest of your body.

I do not know.

It is a good question to me.

I do not even think I have a good idea why.

It seems to be uniquely human. Maybe some other great apes? I’m not really sure about that ape part though.

Why say groin hair? Maybe this is one possible idea. Let’s borrow earlier discussion.

There is confusion surrounding the persistence of the appendix in so much as appendicitis causes death in young reproductive people and should be actively selected against at a superficial level.

Something else that causes a similar number of deaths worldwide at least recently, not off from appendicitis, by more than a factor of 0.5, would be kidney stones

I suspect we don’t know nearly as much about the urinary Microbiome as we do the gut micro biome. At least some people think certain bacteria- Lactobacillus crispatus- may have a role in the urinary micro biome in preventing kidney stones, and in the vaginal micro biome in reproductive health.

Is it possible that groin hair helps create an environment that fosters Lactobacillus crispatus ? Helps create some sort of niche? Facilitates spread? Selects against competitor bacteria? This is almost certainly not right but at least it made me think…

I get kidney stones. Not fun. How do I get this lactobacillus crispatus?

Sorry to read that. Stones cause a lot of suffering.

https://www.lerner.ccf.org/news/article/?title=First+full+characterization+of+kidney+microbiome+unlocks+potential+to+prevent+kidney+stones+&id=b3031108fb05bda66f7debc895b48f00f6f73894

Cleveland clinic was looking into this.

They may have trials or pre clinical data. I think it’s a fermented food microbe.

But not sure this is ready for prime time as a treatment (kidney stone formation is fascinating. It’s not entirely clear things to me that prevent stones before osteoclast like transformations will work after. https://pmc.ncbi.nlm.nih.gov/articles/PMC5683182/) .

(Plus it’s in healthy women’s reproductive tract. So comes from mom- like mitochondria, gut microbes, and early immune components).