In the time of growing age....

What happens to the parents when their children grow up. why they starts behaving for them as they are aliens coming from mars. why so much protectionism especially when she is a girl child and a pretty one and also juvenile one. will they live without males in their future life ? So why don't their mother teach them to survive with a alert mind for this bisexual world. why they try to make them safe by blaming only males....rest after some time