Why girls are shorter than guys?

Question: "Do you know why girls are shorter than guys?" Answer 1: Because when they hug each other the boy lets his head rests on her shoulder & feels the support. The girl rests her head on his heart & feels herself secured by his heart beats & completely surrenders her life to him! How Romantic!! . 
Answer 2: Because when they hug each other the boy lets his head rests on her shoulder & he can see the other girls behind her.
The girl rests her head on his heart & feels herself secured by his pocket full of money and completely
surrenders her life to him! How Realistic!!