Don't listen to him, Nick. Trust me, you might get more disposable income, you might be able to drive around wherever you want to but gone will be the days where life is all about footy, cricket, your mates, reading and your hobbies. HSC/VCE's a walk in the park compared to graduating and looking for a job and balancing all your responsibilities!
I'm about to graduate from uni and boy can I tell you that's the last thing I want to do! :(