Well actually. How many friends do u got on facebook? 100, 300, 1000, 3000. How many of them have stupid facebook status? Its very few. I have 170 friends and only about 3-4 is updating their life. So most people are normal I guess! And most of them do it for a short period, couple of moths, then they stop.
Facebook is a great tool, depending on what you aim for. Its great for SOCIAL networks haha, groups, sport, events etc...I thinks its the best medium for reaching out to most people.