Hmm... I really should buy a safe for my coins for protecting in the case of fire. I have to admit, I've jumped on the digital train for documents. The only important physical documents I have are my and my kids SSN cards, their birth certificates, and our Japanese my number cards (Japan's version of SSN). All other documents I have scanned and keep on an external drive and encrypted on iCloud.
That seems to be the way things are moving lately. My parents have a safe that is a bit more substantial, but I still think it wouldn't be hard to get into if you really wanted to.