@JMary2021 I did have support - both sets of grandparents would take my DD for 1-2 weeks each in summer holidays. My ExH also was a professor, so had time free in the holiday and I would take some annual leave. (And he continues to do a genuine 50%)
But it was still very hard. I made the conscious choice only to have one child. I knew the GPs loved their hands on role with my dd but would struggle to do the same with two children. It would also have made childcare costs much higher, and sapped my energy much more for pushing forward with my career. And I felt it would rob my dd of the focussed time I could spend with her.
Another conscious choice I had was to move out of a low paid career (think artist kind of thing) to climb my way up in big business.
I also worked bloody hard. E.g: I did an executive MBA over two years - the first when dd was born and I was on maternity leave, then with 1 year old baby, while working full time. In the second year, I would study late into the night, baby in lap or feeding, then get up in the morning, taking baby with me on hour long commute, drop her at day care, go to work, work full day, collect her, commute back, get her all sorted. Study, sleep. Repeat.
I'm more relaxed now and am able to call the shots more, but I would very much go the extra mile in the early parts of my business career. Eg working until 2-3 am some nights to deliver for somebody important, again all while dd was sleeping. I'd say I spent a good decade unspeakably exhausted but got valuable qualifications and delivered some exceptional results in that decade that set me up well.
That said, I know many of us work equally hard or harder in lower paid and more emotionally or physically stressful jobs. It's unfair but the result of the commercial world we live in. The field you end up pushing yourself in really does make a huge difference.
I think we owe it to our daughters to be clear about this. We tend to say to teenagers 'find your passion'. I am not sure this is quite right. I think the advice should be 'you have a choice to do lots of things.... with lots of pros and cons, including financial... the financial aspect will make a difference to your life in these ways... so best look for something you like, you think you can be really good at, and will give you the ability to make the life choices you want."