i think this thread is sad not just because of people's lack of respect for other people's choices but also people's lack of insight into what really is a choice.
To the investment banker who said if she worked she would only see dc at the weekends - then you haven't been given much choice have you. It is ridiculous that if you had wanted to go back to work but to leave an hour or two early to give yourself a little time with you dcs each day your contribution would be seen as worthless. The choice to stay at home is also a huge sacrifice in terms of your future re sick leave, pension, career progression etc.
I went back full time and cut my hours from 8.30-6.30 onwards down to closer to 9-5pm by being more efficient at work. I didn't chat to anyone and didn't stop for lunch or any other break. I got away with it because of my line of work.
Feminism is all about balancing motherhood and work - which ever way a mother sees fit - and if we can't support each other in our choices - then our daughters won't see much of a choice being presented to them by their mothers.
I actually think the balance between mothering and working comes down to fulfillment for the mother and the ability to trust your childcare. Some mothers have an ability to feel fulfilled through caring full time for their children some don't. (Likewise some feel fulfilled by work and some don't).
As for childcare I have been lucky enough to have access to a great nursery where I believe dcs get better care than if they were at home with me. When dd starts school I will have to readjust my thinking. There is a private school in our area that does 8-6pm and only shuts 4 weeks a year. If we could afford it that'd be great but as it is I don't trust anyone to provide good enough after school care for dd and am going to try desperately hard to reduce my hours. So for those who can afford to replace themselves at home then the current work environment may well seem attractive. Everyone will draw the line differently about how much they trust the available childcare to do an adequate job. Naturally people able to afford only low quality childcare will more likely opt to do it themselves.
We have the choice to home school in this country but most choose not to because we believe school teachers can do a better job. Until we live in a society where excellent childcare is available to all at reasonable cost (for which I would gladly pay 60% tax) and women can work at what they chose when they chose then I don't think anyone should be criticising each other for their decisions. (If and when we do I can't see us being bothered to criticise - it then really would be each to her own)