Originally Posted by
pittpanther
Yep, that is the failure scenario I would be worried about. A rogue "delete" command from Dropbox ends up wiping everything from all my devices.
Google Drive allows you to backtrack to any time within the last 30 days. This protects against an accidental deletion.
Further, assuming you have Google Drive or Dropbox synced to more than one device you're okay in case of deletion so long as at least one of your devices is turned off at the time.