In some states a 14 year old can't enter into a "legal contract" but than can enter into a marriage covenent.
Fact is that society and its sexuality has entered a new stage...
We're entering the age (era) of consent, where the actions of individuals are not defined by others but only by themselves.
Children cannot give consent (legally or mentally), neither can animals or corpses. Thus the point of paedophelia, beastiality or necrophilia is void.