I think our children won't be "anti-smartphone" in the same vain as we are not "anti-mainframe"
Smartphones won’t go away. Yes, wearables will replace some use cases – just as personal computers replaced some mainframe use cases and smartphones replaced some personal computer use cases. But smartphones will continue to evolve, just as one can draw a line from time sharing on an IBM 709 to spinning up a Kubernetes cluster.
A smartwatch can give directions, read and reply to messages, look up information, display schedules, and take pictures—all without taking my attention too far away from the real world. Anything longer I may as well do on a computer or tablet. I wouldn't be able to read the news or random forums, but the inability to do that 24/7 would be healthy IMO.
I don't forsee a future where smartwatches could replace smartphones for everyone, but I do think they could replace them for a lot of people, me included.
And, society can adapt. People used to talk on the phone in public constantly (and still do to a large extent, just less). This would be far less intrusive.
† For what it's worth, this is Google's AI. Rebble, the community-run service that lets Pebble's operate post-shutdown, chose Google for voice dictation, and as a result its more accurate now than it was originally.
And the idea that we will jump to having our devices being able to read our mind seems like a stretch.
As VR and AR progresses there are great new features like hand tracking, which allows for even higher precision than swiping on your phone. I agree with you, interacting with things through your hands is really intuitive, but I don't think we have unlocked it's full potential.
It’s possible that future technology will make it more useful, but on the current trend it doesn’t seem likely that AR/VR would surpass even my Apple Watch usage, let alone iPhone.