Physical?? I don't find it smart. What if I somehow lose the paper? There are dozens of ways. From kids until maid.
there are lots more ways that you can lose a digital backup, hardware failure being the most common reason. just last year i lost my hard disk to bad sectors now if i didn't have any backups a lot of my documents would have been lost.
I'm thinking on uploading my rar on some google drives and mega accounts. Can't be lost then. And if course save it on hardware too.