I don't make or receive many calls or texts....just as well since I have a prepaid phone. I do like texting, because like email, you can proofread before you send....but since I don't have a QWERTY phone, I still don't do it that often(numeric keypad texting sucks!).
I do use the alarm function on it, and it is a watch/calendar for me as well. And as others have said, the caller ID is handy too....sometimes I don't want to talk to certain people.