Well Martinsr, I understand where you're coming from. I don't understand the friend thing either. All it does is let you know that someone wants to be your friend. It doesn't sign you up to follow their posts or anything.
Personally, to me a friend is something very special, and I am kind of particular who I call my friends. I have a lot of aquaintances, but not so many friends.
I joined Facebook to be able to see some of the things my kids were talking about. I rarely post on it because I don't understand it. The few people I have as friends on Facebook, compared to what many people have, are actually my friends and family. I got a friend request from a kid of a neighbour I had over 20 years ago. What's up with that? I doubt I would even recognize him if I saw him.