I think he has a point. My father, mother, and even my grandfather uses Facebook. Why are they using it? Because it enables them to keep in touch with their classmates and friends. Long lost friend especially. They are too long apart that email, IM, Skype, and text does not exist yet.

Additionally, for email, IM, Skype, and text, you need to know their email address, username, or number to contact them. In Facebook, there's a chance that you can find them by just searching their name.