A lot of my friends are calling Australia Day "Invasion Day" - the historical connotation of landing in Sydney cove are unavoidable. In the larger context a few hundred years makes no difference, lifeforms come and go. We are here only temporarily, no use getting caught up in messes from the past - time is much better used focusing on the future. Let's call it "We are here Day".
Australia Day can become the focus of patriotic (read bogonism) can have at times violent outcomes. I have been at the receiving end of it way too often for my comfort and have been caught by the safety net of private health insurance. At least it promotes some kind of Australian industry - which the Australian flag bag (made in China) I just got from the supermarket does little to. As an engineer it is sometimes frustrating to see the lack of technical production capacity in Australia, well we have a few defence contractors perennially running over budget and some car industry but no advanced electronics. Labour is just way inflated in value - good for affordability of iPhones I guess.
Wealth is usually on a logarithmic distribution and highly influenced by the initial conditions i.e. luck of birth. Our lives are too short for the chaotic butterfly effect on which the universe rests to sufficiently evolve from our initial condition. What we observe is a finite almost linear element of the unfolding system, yet it is sufficiently unpredictable and fractal to be interesting.
Being Australian can simply be the luck of being born in this country or "earning" the right through education, preserverance and holding up signs to do the Citizenship test since the National computerized testing system failed and we don't have the technology to make it more robust. Yet I am willing to hang around and make the system better.