I find skype useful when on long business trips - for talking to my wife and young daughter. The little one’s face lights up when she sees me.
Other than that, I do not use video calling.
I can see its usefulness in some situations, such as yours. The one time I saw a Skype call was when my wife wanted to contact some relatives in Europe, and I set it up for her to use. She hadn’t seen them in years. The other good thing about it is that it’s free. My wife commented on how her father used to pay through the nose when he international phone calls. He would have loved Skype, but he didn’t live to see it.