Nowadays I refuse to do any serious work that isn't in source control anywhere besides my NAS that takes copy-on-write snapshots every 15 minutes. It has saved my butt more times than I can count.

Yeah same here. Earlier I had a sync error that corrupted my .git, somehow. no problem; I go back 15 minutes and copy the working version.

Feels good to pat oneself in the back. Mine is sore, though. My E&O/cyber insurance likes me.