Ask HN: iCloud Documents sync delay doesn't inspire confidence

iCloud Drive has come a long way since the days of me.com ... but still, when I open my laptop after a day-long break and I see old files cluttering my yet-to-be-synced iCloud Desktop (remnants from temp files deposited and since deleted from my desktop computer) it doesn't inspire confidence.

Is it foolish for me to use iCloud Desktop to store personal documents? The only reason I do it is (a) to sync between desktop and laptop, (b) have access on iPad and iPhone, and (c) as a catastrophic-failsafe