I agree that sexism can often blight relationships, but I also see lots of men being the victims of this, as well as women. I've known couples where the women had far greater earning capacity than the men, but wouldn't even countenance the males becoming the primary carers and giving up work for a while, even when the males desperately wanted to.
I've known of two specific couples where this caused a lot of resentment. At the heart of these situations was the sexist notion that women are the best care-givers and that it is a man's responsibility to work outside of the home, even if this meant in both cases working for less money than the wives could earn and therefore having an attendant impact on the family finances.
Then there's the couple with whom we have had a life-long friendship. Married for 20+ years, the wife gave up work the moment they were married, even pre-children. Those children are now grown and independent, but the woman still won't get a job and the husband has to do 2 jobs to make ends meet and help with university fees - and fund his wife's QVC shopping habit. She admits to me that she has a very easy life and that she is lazy - but she believes strongly that men should work and women should stay at home.
I also see some blatant sexism on these relationship boards. If a man has been unfaithful, he is called a scumbag, a cheat and an abuser. Women are told that it is not their fault (which it isn't)if their partner has been unfaithful. If a woman posts that she has been unfaithful, lots of people are sympathetic and scathing about the betrayed H's failings - implying that it is the husband's fault for the deceit that has befallen him. Cheating women are never called "scumbags" or anything approaching the epithets reserved for cheating men. I've even noticed this when men post about their unfaithful wives - she is never called awful names by posters.
FWIW, I wouldn't want posters to be attacked like this either - it really doesn't help and fails to recognise that good people what ever their gender, sometimes do awful things.
I often think there is a blind-spot on these boards about female behaviour - it is as though we can do no wrong and if we do behave badly (as in the case of so many OW, for example) it's because we were misled by a dastardly man.
SGB, I was hoping you'd tell us more of your story and the steer you are giving (or plan to give) your DS about all this, but I do understand if you want privacy on those matters. I'm sorry you're irritated and hope you will see that these are just perceptions of how you come across at times - I'm sure you don't hate men, but it just reads that way sometimes. We can't know anything about what people are really like on these boards and so we can only have superficial perceptions.
And FWIW, AnyFucker - it's DH who does the washing in our house, (hopefully not skiddy) undies and all!