Backing up your Mac is not just something you do when testing betas like macOS Tahoe; it is an everyday essential if you want to avoid risking losing irreplaceable work. Maybe you think you don't need ...
Without going into detail, yes, the HDD in my 13 inch MacBook Pro crashed, and yes, I didn't have a complete backup. For all my Macs, I usually do two separate backups to my backup server (OS X 10.5.8 ...