listen to this sexist dickhead - "imagine having in your guts for 9 months an abomination. Imagine a foreign body, a worm. There is no wonder, then, that nature piggy-backed on the feeling of disgust to steer women away from incest, i.e. away from relatives, from familiars, from those that provide for her. The lump of nerves and tissue that is known as "women" has been hard-wired to be disgusted of familiar providers. What is more, it is also hard-wired to take advantage of them. Because, if they can submit her to that ultimate insult, i.e. impregnate her with a monster, what behavior can match that insult? Oh, she'd better get everything she can, while she can, out of him, to make up for the possible damage - and to gain, if possible.  The whole female existence is defined by those, ...well, existential issues."