Popadup,
Funnily enough, I trained as a teacher (as a mature student) simply BECAUSE I could take work home, and this fitted far better with family life than the kind of job I did before children.
I used to be a middlish manager in a large multinational. 8 - 7 days, one week a month on long overseas trips, several shorter European trips a month. OK, no work to bring home - very much a 'once I'm out of the office that's it' life - but not a life that was compatible with having and enjoying children, especially as my DH had a job with very similar hours and expectations of travel away from home.
I became a SAHM when I had children - but I have a brain, a degree, a PhD and a serious work ethic, so while I was happy as a full-time SAHM while the children were at home full time, once both were in school I needed to re-enter the world of work.
For reasons too lengthy to go into here, I decided to go into teaching. Partly, as I say, because of the opportunity to 'split' the 'standard professional length of day' (almost everyone I know who has my kind of qualifications works c. 10 hours a day) to be more family friendly. So instead of starting at 8 and finishing at 7, I start at 8, leave school at 4.30 by arrangement with my head, do 'family' stuff until 8 pm or so when the children are on their way to bed, then do the remaining 2.5 hours of the 10 hour day at home.
It's not poor time management - as I say, the doctors, lawyers, accountants, architects, university lecturers, other teachers and head teachers, middle managers, consultants etc who were educated with me do very much the same hours (the theatre director / playwright and the composer / orchestral manager work similar hours averaged out but it is much 'lumpier' over the year). It's just how those hours are arranged within the day that have changed for me.