Thermos, you are being bigoted and judgemental, and appear to be shockingly uneducated in the very area you are preaching about. Do you stalk the childminder board just to give that high horse of yours some exercise?
I went to work from choice, not need. And I am pleased that my choices have given my children such a fantastic start in life.
At the age of seven my son now needs me slightly more (he is dyslexic, dyspraxic, and has minor ADHD), and I am working part time to accommodate that. Fortunately my working enabled him to attend (from the age of 3) the school which happened to have been the very best school he could possible have attended for the diagnosis of, and accommodation of, his conditions. As the regional educational assessor told me, had I sent him to any of the local state schools, his condition would most certainly not have been diagnosed for a number of years*, by which time he would have fallen seriously behind. As it is, he is making brilliant progress, achieved level 3 in all his SATS, and is managing to hold his own in such a way that few people realise he is doing anything other than simply sailing through - very few people even know he has extra needs.
Good thing I made the right choices at the time, even though I had no idea at the time how things would pan out. Without working, the school my DC's attend would have been out of our reach. As the other posters have said, there's a lot to be said for keeping your options open.
You do what you think is best for your family, and most of us respect that and don't spend our lives tutting over the garden fence and throwing rocks just because other people make other decisions. And some of us even try to be supportive to others. But then, that requires a capacity for empathy that is so lacking in some of the less enlightened posters...