Facebook is evil. It is a tool of Satan.
Flame away about your grandkids pictures, family news, etc.
Doesn’t change the basic facts about Facebook.
Facebook is like a high school year book, that rather then being safely stored in the attic collecting dust, you rub in people’s face each time they come to visit.
It encourages idolatry. Rather than post your grand children’s pictures, spend time with your grand children.