I'm and old codger at 54 and bought my first smart phone, a Droid X, about a month ago. I'm checking weather, reading books on Kindle, playing Euchre and having a good ol' time. Threw away my paper calendar and using the Droid X for that. Take notes on EverNote. Oh, and it makes phone calls too!
Wonderful little device. Love the built in Navigation app! Gave my old GPS to the wife, and bought a adapter for the car.