Why does InDesign re-install itself almost daily?

I'm about at my wit's end.

I am preparing a book, the final week before it goes off to the publisher, and InDesign has re-installed itself nearly daily since I began, leading to numerous crashes, weekly re-installs, occasional corrupted ID files, corrupted color setting components occuring weekly, etc. Today, the daily reinstall failed and I had to hunt for a solution, DL and run the Creative Cloud installer's repair function to get things going again. Precious hours -- poof!

BTW, I only have to reinstall the Creative Cloud app once month or so -- rock solid stuff there.

Surely, the ID software is not updating/reinstalling every 24-48 hours on purpose? Is it? If it is, who thought this was a good idea? It is wreaking mayhem. Software changes should be grouped for periodic updates--something reasonable, like monthly. Nothing can be so important that updates must occur daily, ignoring the quite real stability issues.

If ID is not being constantly updated, thereby provoking the insane amount of instability I've experienced, what is the secret to obtaining stability?