Can the stock Gmail be disabled ?

I don't like the way Gmail to sort mail in labels, I want a more traditional layout easy to understand and I've full control of folders, so that I disabled Gmail sync. and used other email apps such as Aqua Mail, and now K9 to handle the mails. So far so good except some minor problem I can live with, but for unknown reason Gmail started to sync. mail again, I received the notification today, I recheck and the sync. still off, I don't know how come the mail, so that I disabled the app completely, but don't know if that can really be done, Google always have "hidden agenda" doing things behind the scene we have no control of it !