Was in the middle of working on a game I had been working on for a couple months but had the original copy already corrupt so I was working on bringing it's backup up to the originals point...

Suddenly the power went down mid save, turned the computer on aaaaaaaaand it's corrupt, ended up cancelling the game because I didn't have time to rewrite and build everytbing from scratch again...

Now I don't use hard backups, all gets backed up to the cloud for easy roll back 👍