o man, sorry to hear about this. breakups suck. but dont jump on the women bashing, women hating bandwagon. that will just prevent you from ever finding someone special.
after many horrible relationships and breakups, i finally learned that you cant dwell in the reasoning of someone who doesnt appreciate you. it will drive you insane, and it does no good. if someone can look you in the face and decide that they dont wanna be with you, then they need to be forgotten. figure out what you may have done wrong, what you can do to improve yourself, grow from it, and move on. every relationship is a learning experience.
dont waste your time and energy worrying about her. she wasnt the right person for you, thats all. not all girls are evil, i promise.