I've had a smartphone for a few years now. I remember when the first Android smartphone came out and I really wanted to buy it but without a data plan and just use WiFi with a voice plan. Needless to say, it was not in the cards, and neither was paying $60/mo for (even then) incredibly slow 3G internet, so I waited a few years for LTE to get good and cheap before I took the plunge. This was later than many, though not all, of my friends, and we enjoyed our retro-pride at having flip-phones for as long as we did for many of the reasons cited above (this is all I need to call people, etc).
It *is* easy to get lost in a modern smartphone, they're pretty slick and glossy and fast and can hold not just the latest game but ALL the latest games, at least for a while. I've gotten lost myself at times, so I feel a little shifty-eyed when I read people casually discussing those poor fools who lack the self-control not to stare at their phone, and are therefore horrible people. Erm, well, I see your point, and I dislike the short-attention-span-always-on culture too, but this is not always true.
Anyway, I think mobile phones as a whole have been a pretty wondrous boon for society. I remember in college, wearing clunky cargo pants, with my flip-phone, my camera, and my MP3 player each taking up space in a pocket, literally wishing the day to come when I could combine these all in one non-clunky device. Now that I think of it, my wallet was in the 4th pocket... I'm not really craving that being folded into the phone, but it's coming too, and I'm more or less ok with it. I already use it for that periodically. Don't get me started on the usefulness of a GPS, something that never would have made it into a pocket by itself.
Anyway, it's like any other tool, it's what you make of it. Every employee in America had a game console at their desk with the dawning of PCs too.