Every human has a different perspective and approaches problems differently. The old adage "two heads are better than one" comes to mind. With AI there is the possibility that just "one head" will make millions of decisions using a single algorithm. Think about that. No team cooperation. No learning from experience. No brain storming.
Who's second guessing the AI? Where is the alternate perspective? Where can you go to get a second opinion when the computer has replaced humans? Imagine being misdiagnosed by a computer and the clueless human health care workers don't or won't question it because the computer said so. You'll be one the phone talking to an AI which is looking at records generated by AI full of data compiled by AI. Why pay costly humans when you can replace them with a computer.
All of this is going to dehumanize a very human industry (along with everything else.)