Who are those people having lot of time to re-read their old message history? I assume most people only read last several messages in a chat. This matches the real life conversations which are not stored anywhere. However, police will definitely be happy to discover that your many years messaging history is intact.
I would rather want a feature, like Telegram has, where you can set auto-delete of all messages older than N days.
I would rather want a feature, like Telegram has, where you can set auto-delete of all messages older than N days.