Is it because of your parents forcing you?
Nope, my parents were happy no matter what score I got. Not that they didn't care, its just there was no pressure at all from there.
Is it to pursue a certain career?
Do you just want to do as well as you can?
Partly, basically at the start of the year trying to get into my course was one of the main things that motivated me to put the effort in. As the year moved on, I started to feel more comfortable that I would be able to get in. So I kept putting the effort in to see what I could actually achieve.
To get rich?
To gain respect?
Nope, and nope. I think I kept working hard because I was enjoying what I was studying, when you have an interest in something, you put the effort in and work well

I really enjoyed spesh last year and so I kept putting a lot of effort into it (to the point where I was procrastinating from english by studying spesh, don't do that...). Same goes with Chem, methods and physics (VegemitePi we already know your opinion on that one

).
Also as my family is not that well off, I did try to do my best to see if I could get a chance at a scholarship, as it would mean that I wouldn't of had to spend a lot of time on a job, and rather spend that on studying e.t.c (i.e. not for money but for time, if that makes sense). Ended up getting one in the end

I thought that I might start getting lax when I started uni, it didn't happen because I still enjoy most of what I'm doing, and so again put the effort in. Uni is different though, like I'm still aiming for HD's, but compared to VCE, you don't learn to maximise your mark, you learn to actually learn

, for me anyway (hope that makes sense).