Y'know, if you got me in a corner, I'd confess that I'm actually not all-too-happy about Western Australians playing for New South Wales, either. The way the Australian domestic system is geared towards the national side makes it a fool's dream to think that sort of stuff would ever go away, obviously, but the fact that players do it at county/state level doesn't make the fact that they do it at international any more better in my eyes, as I don't agree with the former anyway.
I'd hazzard a guess to say that Nathan Hauritz, for example, doesn't really feel any connection to New South Wales at all, and is merely playing for them to advance his career. His friends and family actually give him stick about it, so I wouldn't think it'd be something he'd be particularly proud of doing. I bet he moves back to Queensland and follows the Bulls after he retireds as well. I don't blame the player himself for doing this; and he has to earn a living and he naturally has personal ambition as well. I don't like the the fact that he can do this, though, really.
I regard playing cricket for your state, your county or your country as representative cricket, which should be about more than advancing your career and making some money, IMO. This extends past cricket as well and to all sports, really. Franchise/club systems are a totally different matter to representative honours from where I sit.