With the proper upbringing, a person will have developed certain values and the ability to think for themselves. This person will more than likely make wise decisions and choices in life.
Right now the bulk of us don't have these values and thus have to be treated like children all our lives and be told what we can or cannot do. Remember when we were children? What would you do if your parents told you not to do something? You'd do it just for the sake of rebelling won't you? How then do you prevent your children from doing something you don't want them to do? You educate them right? You don't ban them without explaining why.
Until today we as citizens are still being told what we can or cannot do without any logical explanation.