There is a way to control your personal data in Facebook, and that is to use a fictitious name. That way, you connect only to the people you really want to connect with, and not to random, barely remembered people from your past. No one needs to remember that "Dale Evans McGillicuddy" is your alias if you're in their friend list... especially if you put a real picture of yourself.
Above all, your personal data is perfectly safe, and you have all the facebooky connectedness with the people you really care about.