Our society is perpetuating this reality of women cheating in our society for several reasons:
One, Hollywood is telling women that cheating is ok as long as you come clean after the affair and tell him and he will forgive you. Everything will work out ok and even turn out better because of it.
Anyone that listens to Hollywood or lacks the sense to be involved with someone that is so easily influence by "Hollywood" - seriously is too dumb to marry and breed in the first place.
Two, American women now are entitled to cheat and have that right since their fathers cheated on their mothers and now there needs to be some payback. This has been proven to be statistically false, that the large majority of men never cheat on their wives, then and now.
While you're probably right (can't see how I could not agree) that can't possible make up a large part of society. I think that yes, people (men and women) have a very warped sense of what they feel entitled to but I also think that that as a basic behavioral pattern has become worse the past 20 years. Even children in school have these grandiose ideas as to what they feel entitled to and what is owed by eveyone to them without having made any sort of contribution to warrant any response whatsoever.
Three, competitive consumerism has eroded the judgment of American women because they see the wealth of the top 10% and think they deserve it just because they are half-ass good looking. They feel they are entitled to this lifestyle at someone else’s expense. When the husband cannot provide this level of income, the wife feels resentful and entitled to some payback for her not getting what she rightfully deserves.
Goes back to Hollywood and entitlement above - it's a change, a bad change in society. A truly competitive woman would make her own way in the world and make her own money and buy herself her own toys without the necessity of marrying a man to take the place of daddy. Only a princess who's parents taught her that a man's job in life is to care, provide and shower her with the same overload of gifts they gave her would think that sort of entitlement if owed to them.
Four, the divorce law pendulum has swung too far to the left and has given American women an incentive to cheat and not perform in the marriage. This is because there are welfare transfers from the ex-husband to the ex-wife long after the divorce is over under the guise of child welfare payments (along with half of the husband’s financial assets). Divorce in America for the husband is almost ensured financial ruin. This opportunity cost is a very real exit barrier associated with the marriage and gives leverage to the wife to trap him with, even when she cheats or doesn’t live up to her marriage vows. Even if the opportunity cost of the divorce to the husband is less than the social cost of staying in the marriage, she still gets a large payoff, can go whore around with the ex-husband’s money, and then find a new sucker to leach off of while still extracting financial support from her ex. There is hardly any accountability imposed on women or any consequence to their actions. For many American women, this is a real incentive to behave in ways they normally would not be able to without a significant cost being associated with it.