YES...what YOU wrote....all the different media...seems actual hard copy pictures have longest lasting value...altho having computer backups is essential (fire, flood, etc.) I’m wondering what electronics people in 2060 will be using, while hard copies will still be...hard copies...as long as kept appropriately, as you said. Re-copying every 3 years??? I hope you mean the electronic versions...transferring to a new media? To a new jump drive or CD? NOT re-copying the hard copies AGAIN....aaggghhh.