It saves me time, and the caller confusion. I wonder why people still do this:
[ring ring]In the days before cell phones, this method saved no time; it's a real waste now...
Caller: Hello? Yes I'm calling for David.
David: Oh, yes. This is David
Seems that this "institution" is wasteful. Am I missing something? Are people afraid to identify themselves when they pick up the phone? Why answer it then?