Earlier quoted context omitted.
With Google’s nonexistent customer service I’d be afraid of being locked out for any arbitrary reason and having no recourse no matter what recovery procedures I prepared for. Contrast that to my bank where I can go to the branch, show ID, and get problems logging in resolved.
A plug from a very satisfied customer: I pay $5/month for Fastmail. I've emailed support before and reached a human within hours. They helped me with my problem, because it was their job and I'm paying them to do it. Email is too important to rely on a free service which has a history of shutting people out, at any time, for any reason.
I'm a satisfied Fastmail paying user for years