How come it takes so little time for a child who is afraid of the dark to become a teenager who wants to stay out all night?

How come it takes so little time for a child who is afraid of the dark to become a teenager who wants to stay out all night?

<center><br><a href="http://www.sisodia.in"><img src="https://lh5.googleusercontent.com/-FPiph4dT7f4/Tx1i51vs_MI/AAAAAAAAFjg/3akJBlq4hgQ/s0/How%252520come%252520it%252520takes%252520so%252520little%252520time%252520for%252520a%252520child%252520who%252520is%252520afraid%252520of%252520the%252520dark%252520to%252520become%252520a%252520teenager%252520who%252520wants%252520to%252520stay%252520out%252520all%252520night.jpg"></a></center>