Secondary shower thought, an image of Captain Caveman should be the image representing humans on the Wikipedia page.
Tertiary shower thought, we probably started wearing clothes because our own hair used to be our clothes, and we wanted to replace the hair we cut off when we started grooming.
Re: tertiary shower thought: I think that was a theory for intelligence development, but also because less grooming.
Hair is a nice place for parasites to live in. That’s why monkeys spend so much time grooming. If we’re too lazy to groom, we evolve to not have hair, so the parasites don’t have a hairy nest to snuggle up in. Then we evolve the big smart because it’s cold out and now you need a jacket.