http://www.schlaikjer.net/reviews/100.htm
"I would also remark that many of these now very wealthy people were not born with silver spoons in their mouths (I consider myself spooned right up). The Harvard donation-dunning people loved pointing out that Lloyd Blankfein started life on the wrong side of the tracks in a school with double shifts. So say what you like about the huge income-spreads in today's first-world; it is still a place where you can go from a modest income to an obscene one with the right amount of brains, luck and getting yourself a good education."
http://www.amazon.com/Memos-Chairman-Alan-C-Greenberg/dp/076...
Is it worth it? Depends on who you are I guess. You are rewarded with high salary and bonuses, you are working with some of the smartest people, but you are still restricted in a corporation environment.
Why don't most people do this? Who knows, may be they don't have the drive like the writer, or they simply don't know about these fields.
Something else must be at play.
Meaning, you start working at GS for $100K/year, because, in a few years (if you're good) you'll grow to the $1M+ category. On a risk-adjusted basis, ibanking is the most lucrative profession.
There has to be another filter at work. Specifically, I suspect that luck plays a highly significant role.
Liar's Poker is an excellent first-person view of the NSFW work environment at Salomon Brothers.
But don't read LP - read Fiaz's top-rated (34-point) personal story of becoming a trader: http://news.ycombinator.com/item?id=121413
"After racking up some rather hefty losses, I was determined to quit at one point during month four, but because I had a habit of waking up at 4:30 am I simply "forgot" that the night before I told myself I would quit and spare myself further humiliation...by then I was warned that I was now on the red list of traders ready to be cut."