That's not it, nikkas (me included) would rather make actual money, then be stuck in a program for almost a decade that gets accolades from a few people, and only really rewards you if you enjoy your work.Who's surprised. Most nikkas rather be in entertainment or average 9-5 jobs rather than contribute to the advancement of human society.
Coming out of an Ivy League, or top school (like Stanford, MIT, CIT, UC-Berkeley, UCLA, MSU, UT-Austin, etc) and doing well, you can hop into something like investment banking with a starting pay of $125k, or jump straight to med-school, law school, get your MBA, or anything like that and start making six figures within a few years, if not immediately. Most young Black men and women work hard in high school and undergraduate so they can show it with a higher quality of life, not so they can slog through a decade more of schooling on a low salary/stipend.
"Advancement of human society" society sounds nice, but if you grow up poor, or lower middle class, you dream of the day you can choose a nice car, a beautiful home, have no financial issues, be able to buy the clothes you want, choose when and where you get married, vacations, children who have the world as their oyster, etc. Not grinding away 65 hours a week in a lab for a low paying job that is helping "society" more than it is helping you.
I know that sounds messed up, but its true, I chose to go into a softer major in college so my path to law school will be easier, rather than my original BioChem -> Ivy Graduate School -> Lab work, because sometimes putting money first is a better goal.