Yes I can, infact I had quit warez in 2008-2009 for one complete year.
Well, most of the people here are teenagers who are working and maintaining their warez site as a matter of generating extra pocket money or it can be just their hobby, as they haven't got much real things to do in their life better than warez (y)
Sooner or later as you'd be completing your studies, I can guarantee that you won't even look back to warez. You'll be earning tons what you earn from warez. But, there would be still some addicts who would still love to run their warez site as part of their "free time"
But, believe me, if I would earn in $x,xxx (which I'd be earning after completing my studies), I'd never log on here or maintain any of my warez site. I'd even give the websites away to good people for free.
Web Designing, I'd still prefer it as its my passion and its a skill which I have developed totally on my own (and + the flamers who flammed me so that I was motivated to make even better quality graphic)
I'm a person not belonging to the IT & Computer world, as my field is Industrial Electronics, which mainly deals with Microprocessors, Microcontrollers, Transistors, Resistors, Integrated Ciruits, Amplifiers, etc. So it will be a fact that I'd be opening my own firm relating to the field I am and I'm damm sure that I can capture some parts of the electronics market.
So, for me, Yes, I can quit Warez whenever I want.