I've read this thread completely and chiming in requires some courage on my part because I expect to be ripped to shreds by certain individuals. Please be gentle
First of all, I'm going to meekly raise my hand and admit that I am a woman. (Quite the imposter here. Sorry about that.) I am a woman who adores the male gender absolutely. I think men by nature are spectacular creatures. (Even after reading some of the woefully negative and inaccurate generalizations some of you have made about women.)
As I understand it, and I could be wrong, a higher percentage of women cheat than men. The men who cheat, however, do so with higher frequency. As one of you mentioned, all of this is in our genes (but our will can still trump our predispositions). We are mammals and no mammal that I am aware of is monogamous.
Knuckle called women simpleminded creatures, which, believe it or not, is the only thing I couldn't let slide. Since I'm on the subject of genetics, I'd like to point out that women are built with nearly twice the genetic information as men. If we were simple-minded in comparison to men, I'd have to wonder why men are generally so baffled by the female mind. Also, simple-minded creatures should not win the multitasking award, yet somehow we do.

Don't worry, I don't think either the male or female brain is superior. Generally it seems to me that women know a little about a lot of things and men know a lot about a few things. Neither is better than the other, just different.
Now that that's over with, I'd like to affirm what some of the fairer-minded people have been saying. I myself have never cheated in a relationship. I am 27 years old and considered very attractive. Here's a fun short story: I was a picky purist because that's how I was raised. I had my first boyfriend at the age of 20. He was the first person I had sex with. Within a month or two of being with him, he began trying to get into my email account, looking through my call history and poking through my belongings. For about three years of rapid downward spiral I supported him and forgave his paranoid suspicions because I believed you were only supposed to be with one person in your life, and that meant he was it. Let me boil this down. I was a 20 year old virgin, he took my virginity, and then treated me like a secret under-cover whore. Like I said, I've never cheated. He kept me up until 4a.m. before a final exam one night because he was sure I must have flirted with someone on the bus back from class. The point is, I know men that often are sure their partner is cheating when in reality, it's all in the man's imagination. I'm not saying cheating is uncommon. Many men are right and their girlfriend IS cheating. But when you guys say "Women are cheating manipulative liars and I have no respect for them," I know their perceptions have been skewed in some way or another over the years or they are mentally unstable like my ex was.
Despite my awful experience, I still adore men and picked a much cooler guy the second time around. We're going on 4 years.
Have you ever considered this: The most dangerous creature on earth is the human male. It is the most powerful and the most deadly. Cooperatively, it is the most effective killer on the planet. It can and frequently does whatever the hell it wants with the human female (and other males for that matter). But you know what guys? Most of us women forgive you for it and love you to death anyway. We know that you have a predisposition to
end lives; other human lives...and we love you anyway. I don't hear women saying they have no respect for men because of these devastatingly destructive tendencies. Should they? So a higher percentage of women cheat (if you think all of them do, it's simply a demographic issue). It sucks and it's sad, but if we were all going to take a hard line on moral righteousness, I'm afraid men would be on the losing end, because a solid percentage of men cheat, and war is a symptom of your gender. Imagine the countless lives lost to that symptom. If we're going to generalize, let's generalize across the board! Women are cheaters! Men are cheaters and killers!
I will personally pass on extreme and negative generalizations. I greatly respect most men I've known and most of my heroes have been men. If I thought like some of you, I'd have less respect for the male gender than you have for the female gender. In conclusion, if you don't want to forgive the faults of others, what makes you think you deserve for yours to be forgiven?
You can all rip me to shreds now
Ps. All this PUA stuff is really fascinating!