Just because you say AR is not important, doesn't make it unimportant.
Also your arguments are based on your limited experience. No one has actually experienced the full extent of AR to qualify to be able to say it's not going to be important. This includes even those who are actively working on AR.
Most interesting technologies came out of nowhere, so by definition it is natural that you think it's not gonna work, and that's fine. But again, that doesn't make AR unimportant.
Whether you want it or not, it IS coming, and people will experiment with building different products (not just the lame apps you're imagining). If at least one of them sticks, then that's a good start.
But even if we don't go there, it's so obvious that once the technology gets to the point where the UX is so seamless, it will change the way we live our lives. Of course that's not gonna happen with toys like ARKit on iPhone, but when it becomes hands-free (through glasses or likes) it will make a big difference.
Now whether we'll get there in the next decade or not nobody knows, but once we DO get there it's not going to be what you're imagining right now in 2017.