system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When and why did humans begin to wear clothing?
gpt
When is tricky. Clothing is unlikely to survive as long as other tools, so we can't say with certainty that the earliest tool-users (Australopithecus) didn't wear furs or other clothing.

As to why? That's also tricky. There's no historical or archaeological record of early clothing, so your guess is as good as anyone's. Common guesses include for warmth, for religious ceremonies, or to display dominance by wearing furs as trophies.