This reminds me of early versions of Microsoft Word. Edit: And more generally, DOS, FAT and CHKDSK. You never knew, when there was a power interruption -- or when the system just crashed for whatever mysterious reason -- just how bad it would be. NTFS was such an improvement.
I still have a habit of pressing CTRL-S intermittently...
Cloud and mobile apps are often very good at taking this task away from a user, but it's worth remembering to take responsibility for saving/backing up files that have value.
Even clouds can get blown away some times.