If it weren't for that pre-programmed insecurity we'd be running the universe, because there's nothing else to hold us back but the belief it's somehow always a woman's fault.
So we blame Maggie, and Hillary, and Diana, and Camilla, and not the idiots with testicles who cause a lot of the trouble in the first place.
That's why Stacey Giggs - whose husband Ryan cheated on her for EIGHT YEARS with the woman who went on to marry his brother, paid for her to abort their lovechild, had a fling with a celebrity bike called Imogen Thomas which led to an ill-advised superinjunction broken by the "anarchic" internet that was roundly criticised and led to weeks of front pages for the newspapers - blames the other woman rather than the dirty rat she married.
When she bumped into sister-in-law Natasha outside a restaurant Stacey screamed at her: "You're a f*cking slag!" Well yes, she is a slag, but it's her husband who betrayed her, not Natasha, who merely treated Stacey and her marriage in a way which unsisterly and stupid women have been doing since time immemorial. At least she managed to tell the truth in the end, as Ryan still writhed in his lies.
But then there's the "he's the father of her children" argument, and the "men can't help it" excuse, both of which are utter piffle and unfairly reduce men to the status of creatures with a mere physical function and ignore the fact they're also supposed to have morals, a brain and some bloody backbone.
Of course men do have a similar inbuilt flaw which stops them having too much power. It's called a penis and as soon as any chap thinks he is able to achieve a great feat - run the free world, for example, or convince his wife he's been working late - it flares up to defeat his ambitions just as effectively as women manage to screw each other over.
So I hope Stacey will not think me too unsisterly to point out that her husband is also a f*cking slag, and that seeing as she is prepared to put up with the crap dished out by a footballer who earns £80,000 a week and is worth a total of £34m then, I'm afraid, so is she.
Slag calls slag a slag for affair with slag. Well done humanity.
Take the rest of the day off.