I wouldn't mind working on Wall Street, but the feasibility of a career like that is fleeting. Sure, anyone can earn a finance degree and an MBA, but Wall Street firms ONLY recruit potential bankers (and other financial professionals) from the top 10 colleges -- or, to be general, the Ivy Leagues.
Currently, I'm in my freshman year at a local state school. My GPA is solid (sans for the occasional C), but, unless I start planning and calculating frantically, I won't be graduating from an Ivy League school. I guess I can trace the situation back to my senior year of high school; I never thought I'd have to vye for an uber-competitive Ivy League school just to have a fulfilling, high-earning career.
Of course, I could bypass the whole academic tango by gaining admittance into a most prestigious, exclusive club: the "Good Ole Boy Network." In fact, I think this is how most people get into investment banking. These are the guys who have/had dads, uncles, grandfathers that are/were already engrossed and stable in the finance industry. My dad is an entrepreneur who started his own business (it's very successful, but local -- without international clout), and his dad was high-ranking member of the military.
Finance is MUCH harder to break into than medicine; it's one of the only industries that doesn't statute itself on a competitive curve based on academic performance. I guess that kind of makes it like art or acting or music.
Any other suggestions? I still think that being an AA or dentist will be one of my best options. After all, it wouldn't kill a healthy (I hope) 24 year-old to wake up at dawn with millions of other professionals...