It can work but you can't have two careers, a sparkling house, made-from-scratch meals, without hiring something out. Something's gotta give.
In your example of the dentist/policeman. I don't think EITHER of their options if feasible. The dentist can't have the baby at her office. In the same way, the policeman is going to have to sleep sometime. If he's worked all night, I don't think he could be expected to have sole care for the child (who will be awake) all day. They might not need full-time daycare, but they're going to need some sort of child care help.
Yep, I agree with this response. You can't do all of those ideal things, but you can manage the ones that mean most to you. I think the line in the sand is children.
Possible: A great relationship, two successful full-time careers, a lovely home.
Not possible (without help): A great relationship, two successful full-time careers, a lovely home, happy and well-balanced children. Fortunately, today we have many options for "hiring out" many things that used to be done by housewives.
What help do you need to bring all those together? It'd depend upon your resources. You might need day care, a house keeper, whatever. But when you add children, either something has to "give", or you need some help. Speaking only for myself, we used day care (fell into great experiences at every step of the way) and we gave up on the lovely, always-clean home part.
As for the unrealistic dentist/policeman . . . I can tell a story about something simliar: I have friends who adopted their first child and were VERY committed to keeping him at home for his first year of life. She's a teacher and he manages a retail store. For the child's first year, Dad stayed home all day and worked the night shift . . . Mom taught school and hurried home every day to take over baby-care duties. They did it. They were the child's sole care-takers, and they didn't spend on day care. But she said it was ROUGH. They never saw each other. They essentially went from being a loving couple to
both being single parents. She complained that in a big transitional period, she was all-but-without the support of her husband/best friend. They were happy to see that year come and go. They adopted a second child a few years later, and although they love her just as much as they love their son, they brought her home during the summer and when school started in the fall, she went straight into day care. They realized that they needed time at home together as a family.