Not antiquated...but definitely more cumbersome and time consuming. I just don't have the time to call all the people I know on a daily basis, and reading and receiving separate emails from all of them would be just as exhausting. I have family that I would go years without seeing or talking to, friends from school that I lost track of...just because life is busy and we weren't geographically compatible.
But, since I got them on FB, I can talk to my cousins and old friends all the time. I can see what's going on in their lives and they can see mine. It's nice.
Plus...I hate, I mean really despise, talking on the phone. I have never been a phone person. The one thing guaranteed to set my teeth on edge is someone calling me just to shoot the breeze. I'd rather meet in person and talk, I love spending time with people...but I hate talking on the phone.