It's just that most of the comments in this thread were about rationality :-) They were about how refusing a smartphone is a _smart_ thing to do.
Recently our 9-year old wasn't sure how to spell a particular word, so I suggested we look it up in a (printed) dictionary. He didn't think it would be in there(!) He was surprised at my confidence it would be. Of course, we found it.
He hadn't even considered that almost all the words he uses every single day are sitting in a book on our bookshelf, listed in neat alphabetical order, just waiting for him.
But we had all that growing up 40 years ago. The internet has made people stupider, as a culture. People learn less because you can just look it up. Yes, you can. It's much easier to look stuff up, but that means people are retaining less themselves.
It might be easier, but it's not easy. I see people giving up on searches because they are not able to formulate what they are looking for. Maybe that opens a whole different set of problems.
In fairness, a number of things I've read about here on HN and experiences have led me to believe the quality of search engine results has declined as well
I didn't in university either. I was uncomfortable with the idea of my location being tracked, and the idea that I could be interrupted by a call at any time.
Every once in a while, leave your phone at home when you go somewhere. Every step you take, you can think to yourself "yeah, try to track me now, chumps". Pay cash for all your purchases. Refuse to give real information to anybody. You're a digital phantom now!
The only thing you can't get from a less-trackable non-phone device is cellular network connectivity. And you can sort of get around that with gratis wi-fi connections, if you're careful to de-fingerprint your device. I'm imagining a handheld qubes/tails. It would be nice to have a less-centralized mesh network that explicitly valued peer confidentiality, but apparently there's no profit in it yet.