> Google can also cancel your account at any time for any reason whatsoever [...] Using the same logic, you should not use Gmail then.
Actually, under that logic it's only that you shouldn't use the @gmail.com domain; it should be fine to use Gmail with your own domain, since that allows you to recover if your Google account is canceled (just change the MX to another email provider).
Another thing you can do is to never use your Google account for anything other than email; that should reduce the chances of the account being canceled for no obvious reason. For instance, it's been reported that, if you used your Google account for Youtube, and Google decided your real name was not your real name (which it wanted due to the Google Plus integration with Youtube), your whole Google account could be canceled; that risk could be avoided by just never logging into Youtube with your Google account.
Google isn’t worth the trouble.
I pay for my email, you remember paying for stuff you use, an antiquated idea, I know, but restores the balance in the equation.
Actually, under that logic it's only that you shouldn't use the @gmail.com domain; it should be fine to use Gmail with your own domain, since that allows you to recover if your Google account is canceled (just change the MX to another email provider).
Another thing you can do is to never use your Google account for anything other than email; that should reduce the chances of the account being canceled for no obvious reason. For instance, it's been reported that, if you used your Google account for Youtube, and Google decided your real name was not your real name (which it wanted due to the Google Plus integration with Youtube), your whole Google account could be canceled; that risk could be avoided by just never logging into Youtube with your Google account.