Just as a correction to holtzichfest & Max well above:
Whomever says that bochrim go to work to “make it big” is living in the 60’s, when Kollel was really a struggle and society & parents had to be fought to remain in learning, even after high school.
The objective of almost all bochrim/marrieds who are in learning (note I don’t say boys) today who go to work is either (due) to:
1: Survive (they have been in Kollel for X years, and have Chovos, and just can’t do it anymore).
2: Pay tuition, and stop living off of other’s tzedaka, (after they realize they are not subject to the Kesef Mishna’s qualifications of “giving back”, or realizing they can’t live on tzedaka when they have and expect more then the givers).
I have found one bochur who wanted to “make it rich” out of 3-4 hundred. He grew up dirt poor with a single parent & didn’t want his children to grow up like that.
Otherwise it is much easier lifewise to stay in kollel.
And parents don’t usually force their children out (unless they have a family business). Telling them they wont see a dime, even from the Yerusha, is in most cases enough.
Al Shelosha D’Varim Haolam Omed: KESEF MAMMON GELT!