I think that for me, and my DH, our achievement is that we are happy in ourselves, and in our relationship and that our children are happy - and just at the moment, we are. And that's a massive massive achievement and I'm proud of all of us for making choices to make that happen.
Our family income is pretty good, at times I've earned more than DH, at times I haven't earned anything at all, and just now, I earn about 1/10th of his salary but I get to spend most of my time hanging out with my kids which I love!
I don't feel sidelined into what I do, it's a privilege to be able to be a nearly SAHM (though in many ways the hardest job I've ever done). I have had career highs and lows, and the stress for our family of me working in a demanding job, paying lots to a nanny and nursery (at different times) was overwhelming for all of us. I disliked my job and missed my kids and so I stopped working as we could afford it.
I take pride in my dh's professional achievements - he has been able to progress because of the choices we have made (being prepared to move to another city, adapting our life to fit in with his travel schedule, he can work later or start earlier because we don't need to take it in turns to get home for the nanny) and he is proud of mine (managing two house sales and purchases in six months, providing a varied, loving home for our kids, keeping our home in a decent (ish!) state, finding flexible part time work, as well as my previous full time work achievements.
We have been able to live this life because we are financially able to, OP, perhaps save your sympathy for those who have been forcing into working, or not working, or working three jobs rather than those who have built up families that work for them.
Also, things are changing, our daughters will grow up in a world where more and more parents share income generation and childcare in different ways - because legislation allows for it, because they have been supported to make active career choices, because opportunities for women to manage their own lives are improving. Think positive, don't dismiss people for making choices that fit a stereotype - that stereotype is changing and more and more people are making active choices about what works best for them.