I have a backup on a USB, but updating that daily is a hassle hence why I used DropBox- their added 2 step auth was also a big bonus, but if I lose that file I'

I have a backup on a USB, but updating that daily is a hassle hence why I used DropBox- their added 2 step auth was also a big bonus, but if I lose that file I'll have a hard time getting my passwords back.. As jpadvo said, I might look into making some one way backups to S3 or something.