My brother (first born) has a decent job, a pretty wife, and two awesome kids. But I have a doctorate in physics and make more money than him, so... I guess it's a pick 'em. (Although I did almost fail out of high school, so I was definitely a way worse student.)
No. I was a shitty student from 1st grade on (pretty sure I got on fine in kindergarten). They used to hold me in from recess for refusing to participate in math on occasion. Got thrown into the reading group for slow kids, because I wouldn't talk to anyone or read aloud. Then I got booted from my elementary school in 4th grade for being generally insubordinate. Never really liked school all that much.
Depends. I like being educated about a range of topics, and I think that having a broad knowledge base helps in all sorts of ways. That said, the education system that I was brought up in didn't really do it for me, although a lot of that had to do with me and my attitude at the time. Didn't get along with too many other kids or teachers, and I was perfectly happy letting them know that.