I spent a long time in college teaching computers. Sometimes I would teach adults. Other times I found myself teaching curriculum to various classes enrolled in departments. It was a dismal existence that I did for 20 years to pay the bills. I made good money, but gave up a life in the trade.
One of those courses I taught was "Intro to PC". The college stole my notes and had the audicity to put their copyright on my work WITHOUT my permission. That's because the director, the assistant director, and the receptionist who THOUGHT she was a director and the senior teaching staff were predominately idiots who could present a script but were unable to correlate the technical information being presented to practical examples in the workplace.
During the course of Intro to PC I always dwelled on backups for at least an hour. We needed to understand why you need backups. How to execute backups. The importance of rotating your backup sets to keep them fresh. This was done along with various operating system and proprietary solutions toward that end.
My selling point for backups was "if your life is contained on a floppy and that floppy is destroyed your only protection is a spare copy of that floppy. Back then floppies were envogue and nowadays they don't even install floppy drives on machines anymore.
HOWEVER, there are other media like usb drives, optical disks, and the like which make excellent backup copies of those things you'd really rather not lose. Disk based, tape based, optical media based ... whatever. If you maintain a fresh viable copy of anything important you can keep your hands on it in the even of major catastrophe.
Cloud backups consist of your stuff on someone else's machine. This means you are incapable of managing your own existence but for those of you dumbasses out there I suppose it is a viable option. You sniveling no skill having weenie.
So today is World Backup Day. It is a day reserved to drive the importance of regular backups home. For example I back up data files on my servers each week and have restored twice in my career with total recovery.
Had I not had backups this would not have been possible.