>Never, ever

Despite the issues, there are still valid uses for a safe deposit box. I live in a highly fire-prone area and keep a backup drive with family photos and documents in a safe deposit box in a local place that won't burn when I do.

So long as you don’t expect the drive to be there when you retrieve it, sure. You should probably also encrypt any sensitive document on it. Here’s one example. Just one:

https://abc7news.com/archive/8973198/

Note the police are not classifying this as a criminal case (theft), but a civil case.