I'm patriotic, which is why I didn't like them changing our anthem, getting rid of the Volga Boatmen bit at the start.
But as for national anthems, I don't hold our nation to be particularly special. I see no particular reason to take our national anthem seriously. I'm not a patriotic Australian. We are good at some things, and bad at others. And while I vote, it really makes no difference to the result. The direction Australia goes is decided by a lot of people who aren't me, and for whom I have little respect. These are the sort of people who'd be very happy if I sang the anthem with gusto.
I note that my views have changed with time. In the 1970's through to the mid 1980's I was terribly proud to be an Australian (and I loved the music from this era, but I grew older and the music...). But since then there has been a growing disconnect between our supposed characteristics as a nation and the reality (or maybe I just saw things that had been there all along a bit more clearly). A bit like Fremantle FC. I signed up for brilliant/quirky/different, and for a while I got it. Then the Steves took it away. And there was nothing I could do about it but wait for a change...