Yep.
Knowing that, I always backed up and then when I next backed up, filed that older backup. Eventually, I tossed the old ones but they were my security blanket. As a writer, I'd be devastated to lose my writing. I gotta go buy a thumb drive to do backup and I'm way overdue. This damn Dell doesn't have anything usable (at least usable for me) for backup. My old Nero for some reason won't write on the CD's that it wrote on when I was using my HP laptop.
I'm thinking of maybe trying to use an on-line backup service but I'll have to research to find out about them.