Seconded
At the law firm, our email server was runing out of disk space. The admin discovered she could get back about 30% of that space just by auto-emptying everyone's trashcans. Next day, people started screaming for backups. They had whole directory structures built up in their trashcans. Because we didn't track that.
Two users had over 10k messages in their trash. Most with attachments. Of multi-hundred page legal docs. "Boggle" isn't the word for it.
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Implicitly condoning stupidity since 2001.