Just found this thread as I am going through these same questions myself with my 2 young ones. One headhunter put it a good way - if there is anywhere in the world where you can try to have a career and be a parent it's Hong Kong because of the available, affordable live-in help. So, despite the criticisms of HK being unfriendly to part-time roles and women's working issues, I found that to be a good point. But of course that wasn't exactly how this thread was started - it was about how much time with your kids is enough. I recently read that people spend more time with their kids than they did in the golden ages of the 60s/70s (in the US anyway), because women used to be much more consumed by household chores and kids were often left to wander around in the neighborhood all afternoon. Not sure I completely buy into that but I guess the point is that this has been an issue for decades and at least in some people's eyes, modern conveniences have made it easier for us to spend more quality time with our kids when we are with them. I certainly don't remember tons of focused time with my parents growing up, yet it was enough time for me to have a great relationship with them.
Curious tho - for the women that were able to go to part-time roles roles, (esp those in legal or banking), if you even still check this website, are you guys still there? Is it still working out? Career trajectory still on hold? Because I understood from some wise moms I know with older kids that all the women they knew who managed to work something out eventually ended up quitting b/c it didn't work out long term. That was disheartening, but hopefully not the case for everyone.