I agree with this article - before having children we both had very demanding careers - but I actively sought to scale back my career after my first child (i.e part time for 4 days and then 3 days per week) , and after the second, we went abroad for my husband's work and I did not return to work - firstly because I want to be able to spend quality time with my children, and as we move countries every few years, I think it is important that the children have my presence as a form of stability in their lives. At the point of moving abroad, my husband and I had a discussion as to what was the best option for us as a family - if I had insisted on continuing in my career, given that my earning capacity in a full time role was equal to, if not higher, than my husband's, we would have not taken up the option of moving abroad (effectively limiting his career instead of mine) As it was, I was happy to take a step back - and I agree with Weasel budge - when I was in the city all the high fling women were usually the major breadwinners in the family - it was very rare to find two highflyers (with children) - one usually made the choice to 'limit' their career.
Finally, and this might make me the feminist anti-christ, but I quite like not having the pressure of being the family breadwinner, I enjoy being a parent and I think my children benefit from me being around rather than them being 'out-sourced' so I could continue in a demanding career. I am able to do some work while they are at school ,but again, that is a choice to keep my brain engaged, and I have no intention of turning it into a full time career again.