Google has demonstrated enough times already that your account can be permanently suspended for any or no reason at all. While the services they offer are definitely useful, if people are relying on them in their personal or professional lives it's best to be ready in case they are taken away without notice.
Yeah, their propensity to random account shutdowns in lieu of resolving whatever issues got them worried is why I've started paying FastMail and am slowly migrating to mail at my own domain. I can live without any other Google service, but having been a heavy GMail user for the past decade, account shutdown is an existential threat.
