Hello Lil,
I think I'll try and answer you point by point...
Being anti-establishment isn't necessarily a bad thing - humans have often made the world a better place by being anti-establishment (votes for men, votes for women, civil rights and so on). Maybe each case should be judged on its merits rather than opposed because it upsets the establishment.
"I do think you have forgotten how hard GCSEs and A-levels were when we were taking them." I never said they weren't hard, but I did suggest that if you take a good look at what's required, then you might be surprised. Just how many real hours of learning does it take a child to pass a GCSE? Knowledge is not some sort of mystical thing which only the "trained professionals" can reveal to the uninitiated. It is all around us - there to be explored, questioned and added to by people with the enthusiasm and opportunity to do so.
Why not have fun with test-tubes at home? It's not very expensive - and there are splendid things you can do with a plastic lemonade bottle and the contents of a kitchen cupboard :-) None of my school science was really about experimenting - it was about reproducing an 'experiment' that had been done a million times before and hoping that you'd got it right. I don't think science really makes discoveries that way.
My French was pretty poor, but improved immensely when I went to work in Luxembourg in my year off after school. I had no choice but to speak it, which was quite daunting but good fun. Before that, I'd been taught in a very dull way by a non-fluent teacher and managed to get an A at O-level - because the vast majority of it was written work. If your child really wants to learn a language, then s/he can - you can pick up French language radio (just along from Radio 4), read French magazines and newspapers, borrow some tapes from the library, go to France and have a chat with the people you meet and so on.
On the question of drama, how many people don't have local drama clubs and societies? Or a local theatre that runs drama workshops, talks and so on?
Nowhere have I said that I've decided that I "can do EVERYTHING better than trained professionals" - because we're not trying to do the same thing. I'm not criticising teachers in this respect, but I'm not trying to stand up in front of thirty children for forty minutes (or whenever the bell goes) to deliver a curriculum to them so that they can pass exams. That would certainly take "trained professionals" to do, but I profoundly disagree that it is the one true way that children can receive an education.
If my child wants to become "a doctor, lawyer or professional and also earn decent money", then I'm not standing in his way. If it means taking exams in order to do that, then we'll see what it takes to pass those exams. Whoever said that "they will not have the qualifications and won't be able to do it"? Plenty of home-educated people have all sorts of qualifications.
I haven't "closed off a lot of options" for my children in the slightest. I would hope that they will be perfectly capable of finding and pursuing their own goals in life, with the full support and encouragement of their parents. It's not "their whole life" I am determining - it's their opportunity not to go to school, so that they can explore and learn about the world and hopefully see learning as a genuine lifelong activity and one that they couldn't consider doing without. What they decide to do with their lives will have come from their own freedom to enrich themselves.
No, I can't afford not to work, but I work freelance at home (as does my partner). This is not going to suit everyone, but is increasingly common these days. Unfortunately, it's also common to see harassed double-income families who scrimp and save to move into a 'nice' school catchment area (whatever happened to 'socialising with all sorts of people from all sorts of backgrounds'?) or provide private education for children who simply haven't been asked what they want.
Would you want to have parents who'd spent every spare penny on your education? Far from being "more healthy" for all of us, I would suspect that it would be a surefire recipe for an unhappy, guilt-ridden family.
Best wishes