I dropped out when I was 19, had zero interest in school. Washed cars at Avis for a while, did some other BS jobs. Got into IM (porn at the time) and been self employed ever since.
Now 8 years later, I'm back in school studying psychology, not because I think a degree is beneficial, but because I find it interesting*. Don't go to school because you think its what you're supposed to do. If you don't see a value in it, wait. Maybe one day you will.
* and I'm surrounded by 19 year old girls all day.
I'm 21 getting a B.S. in Psychology, probably going to work through to my PhD while doing affiliate marketing. And yeah because it's interesting, not because of th emoney.