Good point. I myself do not use auto-save, because I like to know precisely where I was when a save took place.
What I do is to save it every time I complete a logical unit of work. This can be a satisfactory recording take, or getting initial project setup done (tracks, synths, etc), or a group of edits - that kind of thing.
Then, if my world falls apart, I have a real good idea of where I am with things on that project. I may also leave a note for myself, so I know where to start the next day.
I think though, that for Joe's situation, he was saying that he lost all of everything in every project, which auto-save or my in-process saves would not address.
Only regular backups of the projects folder would have given him a complete means of recovery - to the point of whenever the backup of that folder was done.
In his case, it doesn't look like he did any such backups.
Joe - heeeeerrrre's your sign,
Bob Bone