haha, my visa group is a pretty "famous" one - 475
not to be confused with 457 which is employer sponsored
475 - is a independent provisional skilled visa
meaning that they give u a visa because u have they skilled required by certain states, which are categorised as "regional". visa lasts for 3 yrs, during which no financial assistance (something like american's social securities, this is known as centrelink), for the whole period.
why i came back? - i simply ran out of money.
but it was a great experience, i really enjoy living there. ppl are very warm, fresh food are great. at least i wasn't eating cheap china carrots and cabbages.
why didn't i fight to stay on? - unlike many who went, getting an australian citizenship was never in my agenda.
why did i went in the first place? - i was a burnt out professional going thru a quarter life crisis. migrating to australia for 18mths was like a gap year i never had. i gave me time to think about what i want in life, instead of going-with-the-flow like everyone else i.e. graduate, get a job, get a car, get a house, get married, have kids, have more kids, retire, look after grand kids and then wait for God to come collect me

hahaha
but now i'm back i realised what passion i have in life and i may soon embark on a new and different career path.
being among the australians had also taught me that age is no barrier many things, like starting a new career or dating at 60yo! my neighbour was a 70yo-ish widow with a 70 bf who visits her everyday, and they look soooooo cute! once i even saw an old man with a tongkat, holding a small bunch of flower and a bag (literally d classic brown bag) of chocolates, and was walking towards the beach

it was just sweet. i'm going to live life the best i can and never wait around, wasting my life away....
how about u?

I assume you were staying in Glenelg, Adelaide judging from your id? Ever been to Highway Pizza