I fell in love with astronomy, by being an amateur astronomer the last couple years. I originally got a BS in physics several years ago , but choose to software engineer after college.
I now want to go to grad school for astrophysics. What is it like. Is it exciting and romantic? Do you get to travel to exotic locations to watch solar eclipses? Do you get to go to Chile or Hawaii to do research on solar flares?
Nah, it's a job. There are conference trips, but the travelling is mostly to places you wouldn't want to vacation (arid deserts). If you want glory travel, go for particle physics (though that might be a dying field in the next couple years).
Will you eventually be forced to be a professor or can you get a job in industry or JPL, or NASA?
You will eventually probably be forced out of academia; there's loads of pressure on getting professorships or research positinos at JPL. You'll probably end up being a software engineer again. Search yourself, if grad school is an end to itself for you, go for it; otherwise seriously consider staying an amateur (they have all the fun anyways).