I have a smartphone but most of the notifications are turned off. I follow up and look at stuff when I want to.
I like being able to read or browse the web in boring situations, like standing in lines or in waiting rooms. I don't see the big difference between that and say, reading a book.
I've never gotten or honestly desired a social interaction while waiting in line for something.
Social media and everyone thinking the world cares what they say about everything is the problem, not the smartphone.