Why is it a crime to throw acid?

Acid throwing is a heinous act,it demolishes the hope to live a normal life. This inhuman act must be stopped. It is a social menace. As acid is a corroding substance, it demolishes the skin of the victims. Generally,a young man throws acid to the young girl who rejects his amorous advance to her. The treatment of acid burning is not possible because acid distorts the skin. The victims has to pay the pangs of unbearable existence...