With a smartphone, I can:
I'm sure I've missed some stuff. But all these things have improved my life, some in small ways, others in rather significant ways.
FWIW, I've heard many people give your justification for not having a smartphone. Of those who eventually caved, every one (4 or 5 people) said something like "holy shit, why didn't I get this a long time ago?"
I have often benefited from recommendations for Things I Didn't Know I Wanted.
Given that Less Wrong is a community of unusually intelligent, critical, and self-improvement-focused people, I suspect we can generate a pretty helpful thread of product recommendations — perhaps even a monthly thread of product recommendations.
Rules: