Rainbow Walker, no worries, we all like a good rant from time to time.
I agree that children need, ideally, varied activities, interests outside the home, and periods of time spent away from their parents. My son is only 2, so this is all in the future, but I'd like to see him take part in a wide range of pursuits as your children do. I just don't agree that school is the best place for this to happen. I'd also like the time spent away from family life to be the exception at this age - not 6 hours a day, 5 days a week. I know children only spend a small percentage of their time in school, but it's too much for me! They're asleep for a huge chunk of time; add in school, travelling etc. and what's left for me to teach him what I think is important, rather than what the government has decided children of x age have to know this year? Not long enough.
They certainly are little sponges at this age and I want to make sure that the vast majority of experiences he is having are good, positive and enriching. I'm not going to wrap him in cotton wool or protect him from everything - I can't, even if I might like to!
Of course we are all doing what we think best for our children. I hope none of what I said came across as "parents who send their children to school are evil". And I'm aware that not everyone has the choice to keep their kids at home, so I feel lucky that I can. I believe that at this age, an academic environment is inappropriate, and that learning can and should take place naturally, in a caring environment. These are very small children we are talking about here. They have the rest of their lives to learn to be fully independent, and I think there are better ways to learn respect for adults, than doing what you are told for 6 hours a day.