This tip is good for almost any service. Gmail could ban you any minute. I doubt that they'll allow to get backups after that.
May be if I'm paying some money to some local company in my city, I can have some confidence, because I can come to their office and yell at them until they return my data to me. But they can just be incompetent and lose it, so even in this case I better do backups.
May be if I'm paying some money to some local company in my city, I can have some confidence, because I can come to their office and yell at them until they return my data to me. But they can just be incompetent and lose it, so even in this case I better do backups.