I don't see why anyone has a problem with them having 17 children. I watched their video interviews, and honestly, I feel they are a beautiful family, with well-behaved, and very responsible children. If they're happy with it, and are taking care of their children, well, then what's your problem??? The parents taking care of that many children, the kids working together as a team...running such a large household successfully, I do think that's admirable.
Besides, no one has the right to condemn a husband and wife for having as many children as they want. Most people want 2 or 3 or 4, and that's perfectly fine, but if someone wants 10 or 12 or 20, if they're responsible and take care of them, and all of those children are well-fed, cared for, loved, then it really is no one's business to condemn them. Did they tell you to have 17 kids? No. Are they your 'kids'? No. Then really, what is everyone's problem?
And Catty, about homeschooled kids lacking discipline, you are completely wrong. In fact, it is usually the other way around, though I do not like to generalize and know there are good and bad kids both in public school, and 'home school'. My brother and I were homeschooled for the majority of our school years, and I grew up knowing many homeschooled kids. We used to go on field trips together, had picnics together, did projects together, and to be honest, it was truly a wonderful experience. I wouldn't trade my past for a chance to attend public school for those years for a million dollars. I had my parents' love at home. I got daily trips to the park for play time and exercise. I got to learn 'fun' things along with school things. I got to socialize more with discipline kids, and never got teased or bullied. Most of all, I developed a really close bond with my family, that is still there with me today. Again, I wouldn't trade it for anything in the world.
Would I homeschool my kids? I don't know. It all depends on the situation when I have kids, but I truly admire and appreciate the time and effort my parents took to do it for me, and I appreciate it even more today, after growing up.