Oh, I'm really enjoying this thread, thank you for your righteous rage threelittleducks and your uplifting ideas petisa and your honesty, everyone.
I've taken a step down, career-wise, from a lawyer working long hours and weekends to a legal advisory role that's three days a week and strictly 9-5. It's still fulfilling, but it doesn't have the status nor the money. Now that DD is 2.5 I find I can do a lot more with her, so I've got very into arty crafty things, and cooking with her, and activities, and I also put a lot of energy into having a well-run home, menu planning and decluttering and redecorating, and teaching myself to sew. So the excess energy that used to go to paid work goes entirely to being a better mother and homemaker. You blossom where you're planted, as beesimo says.
But then I get my own mother telling me that I shouldn't put that energy into home but into career, because the children won't be young forever and I'll need the career to fall back on. And I know what she means, I know she's just worried that I'll waste all this education and intelligence and find myself out of the workforce or taking low level jobs because they offer 'mother's hours', and she's almost certainly right that when the kids are older, I'll want the career back.
But dammit, right now I have small children. There is a limit to the types of activities I can do when I have a 2 year old and a pregnant belly in tow; much as I'd love to take up learning to fly light aircraft, or go back to university fulltime, it's not going to happen right now. So do I subsume my energy and intelligence into the things I can do and risk being pigeonholed as Suzy fucking Homemaker, or do I spend my time struggling to maintain a professional identity, despite all of society being set up to make that as difficult as possible, and be accused of Having Children Just To Let Strangers Raise Them?