Well, if this poster had not had the perfect situation, she would have been out of a job. You see, single parent military members (this goes for all, not just active duty) must have a family care plan on file whereby they list people willing to take their children and provide full-time care to them on short notice for as much as 18-24 months at a time. Without such a plan in place, the military member can be processed out and I've known a couple of people that happened to.
As a working single parent from time to time (thanks to deployments), I can tell you that my planning for child care and all possibilities related thereto, takes on a new meaning and urgency when you know there is only one responsible party for your children and you better believe I had 10 backup plans during those times. When DH is home, it's not as urgent. Also, now being a mostly SAHM, child care, when it is needed, is 10x more difficult to arrange and manage than it was when I was working 50+ hours a week. Even a simple thing like going to the dentist is more difficult. DH has to take off work and/or go with us whereas before, I'd just go over lunch during the workday, without a care knowing my kids were taken care of with no further action needed on my part.
-Astrid