What kind of jobs can I do with a degree in Astrophysics?

You'd really need a PhD to get a job in the field, and you'd definitely need a PhD to get a job doing research in astronomy.  Astronomers work for colleges and universities, national labs and observatories, and NASA/ESA type agencies.  There aren't a ton of jobs for astronomers, but that's ok, because there aren't a ton of astronomers either.  The jobs pay between 40k and 200k a year depending on how long you've had your degree and what kind of job it is.  Not many astronomers make over 100k a year.  If you like the field, it's a great job, but it won't make you rich.

A teaching job.
Yes, it is definitely worth it.
Lots of money in grants and prizes.

The choices are astronomical

You can play Rock Guitar like Brian May from Queen.