Google introduces a different set of risks and failure modes. It may shut down the service you are relying on. It may lock you out of your account for confusing

Google introduces a different set of risks and failure modes. It may shut down the service you are relying on. It may lock you out of your account for confusing reasons. Which isn't to say that you shouldn't use it, just that you are exposing yourself to different risks, and you should take steps to mitigate those risks. Primarily by duplicating your data other places.