I'm over 60 and I hate talking to people on the phone. My mother likes it, and that's why I call her three times a week. But most of my aunts and uncles prefer to show their photos on FB and talk about what they're doing there. I call them for birthdays and special anniversaries, and having kept up-to-speed via FB means I can talk about things that really matter, or get clarification on things that weren't obvious.
But they like using FB, and it's the only effective way I know to stay in touch and remain a part of their lives.