It will become very automated, but there will still need to be some degree of human involvement, just like every other industry that has had the absolute shit automated out of it... which is to say just about all of them.
The question of whether or not [industry] will be mostly automated isn't the one we should be asking, because the answer is that it inevitably will be. The question we should be asking is "what is to become of all the people no longer needed to do these jobs?", or better yet "should getting basic necessities to live such as food and housing continue be tied to performing work when increasing automation means that jobs for humans grow fewer while human population grows larger?"
The answer may lie in a universal basic income, or it might lie in adjusting the workforce so each individual works way fewer hours, or possibly some combination of both. And/or something else again. What is for certain is that the "everyone must work 40 hours a week to get by" model is unsustainable.