Power
Knowledge is power, right?
Actually, yes. It is. If you put the time in in this field, you could be a part of some world-changing research projects. As an astrophysicist, you could be at the forefront of the search for an explanation to the secrets of the universe. If you succeed, the answers you find could propel humanity into a new era of love and discovery and prosperity.
The most prominent astrophysicists have earned reputations that give them the power to influence the entire field. The field of astrophysics, in turn, has a strong influence on other fields, like astronomy (duh), theoretical physics, engineering, and the writing of pulp sci-fi novels. That's a decent chunk of humanity that you could potentially influence.
Okay, influence-shminfluence—let's talk power. Respected astrophysicists are sure to reel in lots of young students who would kiss a quasar just to grade papers for them. Yes, in the upper ranks of academia there exists a form of indentured servitude known as work-study. And these are some well-educated servants—grad students, usually—who would seriously wash your car if you asked them to.
Of course, if you want to be the boss, you have to be the servant for a while. Probably. It's not necessarily like that for everyone, but if you're planning on climbing that academic ladder, you're going to spend some time on those lower rungs. You can handle it for now; someday you'll show them all, and your butt will be way up there, sky-high.