Just an observation here, but don't you think that the concept of "need" is so subjective, even in financial terms?
I know many people on fairly low incomes who are happy to live in very small accommodation and have no holidays and they tell me they are fortunate to be able to live on one income. I know couples on hospital consultants salaries who say they both need to work.
You could see their "needs" items as luxuries but to them they are necessities. Often you'll find that lifestyle choices for some people can feel indespensable. I can empathise with both views really.
I guess we fall in the middle category, as we could have easily lived on DH's salary but I personally feel that with the contribution of my salary we as a family can make many more choices - but I do question sometimes whether the stress is worth it, hence us working part-time.....but it does feel like a compromise both ways.
As a final point, I am really pleasantly surprised at those who say they never encountered sexism in the workplace....it's not too bad for me now, but when I was a 20 something climbing up the career ladder it was terrible, I encountered sexism every day - I remember clearly every time I started in a new job people thinking I was the new office angel PA and then their look of sheer shock when they realised I was their new manager!!!!
And I was a fierce kind of character so I didn't let it stop me - still it was there - it's good to know that some industries are more enlightened than the one I work in!!