Doing office work now, no technical tasks... but after working with MS office a while, I'm thinking to add c:\users\me\documents folder to Git.

Height of frustration

Not the worst idea.
With tortoise-git-client diffs between Word documents are displayed quite well (inside word).
Also you have a backup and commented (searchable) increments of your documents.

As long as you don't share the repo everything is fine. Conflicts would be a pain in the 🐴

Just to feel my pain... No admin role in my laptop, so i have git portable, sublime portable, gimp portable, sourcetree portable. Even my ass is portable

Did the same thing my system. What else could be done, kept losing my stuff randomly

It is actually viable.