"Nobody will want to walk around with mobile phones. Who wants to be available any time and everywhere?"
People said similar things about Bluetooth headsets and are saying similar things about AR glasses. And these are very simple in terms of reasoning about how the technology evolves and the probability of adoption by people, yet troves of people get it ridiculously wrong; what they experience every day seems so normal that they can't imagine it ever changing.
Something as transformative and monumental as (potentially) an entirely new and powerful form of intelligence arising is far, far beyond the imagination of most. I don't mean that in that they are fundamentally incapable of it, but that it takes having been exposed to a bunch of counter-intuitive logic and reasoning about how the universe works, which most people just have not been.