Wow.... This is part of the reason you can't attract women or attract less women than you would like. You clearly don't understand women. From what I've seen, women prefer to be with men who show some understanding of the opposite gender.

Most women, like one of the commentators mentioned, are not after casual sex. Women tend to be more relationship-oriented than men. Sure, the average woman can sleep with more men than the average man can with women, but that's not something that most women are after. Just because you, a man, want it, doesn't mean women want it. Men tend to like many things women don't, and vice versa. You're basically offering women something that, again like one of the commentators said, carries far more risk for them than it does you. Women are naturally more susceptible to STDs than men, they run the risk of becoming pregnant, they run the risk of being assaulted, and actually feel more distressed than men following casual sex based on research that looked at brain scans, hormone production, and multiple other factors (and women who have 20+ sexual partners tend to be significantly more depressed and anxious, but this is less true for men).

Women are pickier and more selective than men for dating. This is actually based on evolutionary biology, so you can blame Mother Nature rather than women. Women carry far more risk in mating than men -- beside the enormous toll that pregnancy takes, women also tend to be the main caregiver more often than men for children and especially if the man is no longer around - such as by dying early, getting sick, leaving her for someone else, etc. Women are also more prone to assault by men, who are naturally bigger and more aggressive than women, than vice versa. In addition, women tend to focus on traits that indicate a better long term partner/father for children -- dependability, status, emotional/intellectual intelligence, etc. Not saying men don't look for these traits, but women tend to do so more for evolutionary reasons.

In summary, women are more choosy because they had and still have to be. Sure, men might find it harder to initially attract a woman. But a woman finds it difficult to attract someone that she knows won't physically harm her, won't leave her pregnant and straddled with a kid for 18+ years, etc. To be honest, you're comparing the initial hurdle that men face (rejection, isolation, etc) with the enormous physical and mental risks that women are forced to undertake. Both are harsh, but if things go wrong for a woman, she can end up in a far worse situation.