Because if you get a good teacher you will learn more than off the internet if you want to have jobs in basic manual labour fine don't go.
And its to do with socialisation.
I've also made more close friends online than I have in school. My best friend is an online one, known him for 5 years. School is stressful, and once you hit a certain year, you feel the kid inside you slipping away. I know part of that is to do with getting older, I'd love to be able to play out, make things using old junk and stuff, but I'm too pressed for time. Tons of homework, no sleep, etc. Would be so much easier if I could just drop out for a while.
I got schooled at home a few years ago, due to being so badly bullied at the school of which I was present. It wasn't the best, a lot of the days I did nothing but 1 hours worth on the Internet. And I've still got good grades. As for manual labour, I'll probably be doing things among those lines. I do want to get into restoring older cars if possible. Exams annoy me, remembering homework annoys me, remembering everything annoys me, other students annoy me, teachers annoy me, the conditions annoy me. I may sound a little over the top, but I don't like being in a hot classroom, full of kids who target me, and a teacher who won't leave me alone.
You have to get up early, often eating nothing, get there, get back, which for me is a 1 hour walk. Then I'm doing homework until the early hours, and get little sleep.
Probably why my vision is going blurry in class, signs of fainting?
EDIT - Took longer to write than expected, reading other posts as you view this.