I believe you are confusing boys with men. When I was a boy I acted like an idiot, since then I have grown up and became a man, I now have the greatest respect and adoration for woman. Your percentage becomes reversed over time beginning at about 25 years of age, if you're a girl you'll just have to stick it out until you get older and begin dating men.
maybe because 90 of girls are just that. girls. women don't dress badly or act promiscuously or partake in actions that lead guys to see girls as lesser. guys wouldn't have such a hard time respecting girls if the girls learned to respect themselves first. not that guys don't do that stuff too. but both parts are at fault.
So it isn't possible that the gal has any blame to share regarding the dating decisions she makes? She should look to herself as to what she is doing to attract males. If she is projecting the stereotypical helpless female who needs a male to take care of her, or she is relying on playing to the baser nature of her targeted males,she is more likely to attract the jerks. If she projects a strong, intelligent, and independent female who doesn't really need a male to get by, she is more likely to attract a male who appreciates those attributes. Those are the males that will be far less likely to be jerks.