Storing your digital assets
We all have "digital assets", which are pictures, videos, audio recordings, emails, e-books, music, movies, spreadsheets and so on and so forth, which all ultimately are just "computer files".
Some of them are of negligible or insignificant value, such a MP3 song you bought from iTunes for $0.50, which if you ever lost, you could buy it again for another $0.50.
Others are of very high material value, like the only copy of the blueprints of a trade secret on which rests the whole revenue stream of a person, family or corporation.
And some of these "digital assets" are of a value rather difficult to quantify, but indeed immensely valuable, such as the video you shot yourself of the first steps of your own child... who is actually about to turn 50 next year!