I agree. I email my friends, or see them in person so I know what's going on in their lives. Too often people only want to analyze facebook as an organizational tool. But there is a great entertainment component built in as well.

You get to learn the kind of personal information about your past acquaintances that otherwise you could only get by going to a reunion. You can find out if anyone you thought would be successful has ended up struggling, if anyone you thought was a slacker has done something interesting, if that person who is attractive, and successful is somehow also a nice person, etc.

Spending a few minutes looking at this kind of trivia can be a lot more fun than yet another youtube cat and the game only gets more interesting the more friends you have on facebook.