Really interesting thread, OP
I am much later in my career, so DC well grown (DGC now!) but the struggles you all face are the same.
As has been said, it was easier to juggle when DC were little. I took a year off for both DC, and DH took the next 2 years off - working in fine art, so worked well for him and the family.
I was the first full time working mother at our cooperative preschool (can you imagine?) and was determined to keep working my weekly half day, as was required. I negotiated that flexibility from the start, but it was seen as something quite radical. I'd make up the hours through the week, so no loss of productivity.
Roll onto junior school and that is where we found it most difficult. DH went back to full time work (impossible to live on what he made as an artist) and worked a more standard schedule than I did, but still quite long hours. I began having to travel more and more, and was less and less available as time went on. We outsourced cleaning, but had no family support so depended on after care with a combination of paid help and trading with friends during the week, which we repaid on the weekends. Our family life was chaotic and unsustainable. I kept working more and more and being available less and less.
The DC needed much more guidance and parental presence as they neared puberty. After much discussion, we agreed DH should quit and stay home to parent full time. My career was on a much better trajectory and I am much more ambitious. This worked really well for us, but was again - many years ago - seen as quite radical and he was called Mr. Mom for quite some time. The thing is, he was really good at it. The whole parenting and home business. I am not so much. The change was immediate and enormous.
Yes, we lost his salary, but mine kept going up, so we were not suffering. The DC were so much happier. I was so much happier without the frustration and we spent so much more time together as a couple and as a family. I suspect my marriage would not have survived if we had not made this change.
Hard choices need to be made whether the mother is C Suite or a Cleaner. We are very lucky to have been able to make financial decisions others could not, i.e. live without a second income. My DH has a strong sense of identity, and has never felt less than because of my career. It has worked for us.
I applaud all of us as working women, all of us, who are struggling to find some balance in having a life, a work life, and to be good parents. It is still a struggle we all face. Let's lift each other up, whatever our circumstance, instead of continuing to kick each other. It makes me really sad.