Can someone explain to me what use case I'm missing? Why do people care about old messages? Personally I just read incoming message and never "scroll back".
My parents wanted me to check on their house while they were away. I messaged them on whatsapp when I left my house and then again when I arrived at theirs.
A month or so after my trip I was sent a fine for not displaying my car license while my car was parked on a public road. I had driven down the road where the fine was recorded during the trip. Using the timestamps of the whatsapp messages I was able to show that there was not enough time during my trip for me to have stopped to park.