Why is it that traditionally the better behaved a girl is, the better she is

Traditionally, the good girl is naturally good, in the eyes of the elders, the good child, good character and excellent, know how to be polite, follow the rules, can be said to be a very good girl. But inevitably will make people feel unreal, real people will always have temper, encounter will always let themselves blow up and break things, I feel really need to experience more, good girl may not really is good.

Girls or appropriate spicy some, will not be bullied, the better behaved moral restraints will be more and more, and not necessarily by the other half of the child like, think of the couple quarrel, a tame and polite, has been reasonable, the other side listen to like a mother to educate her son. In fact, the two quarrel not necessarily pinpoint, but there has to be a party will be a little smart, an embrace a hug a coaxing on the good, why have been teaching each other, so that the other side is overwhelmed?