Agree with PPs. I have lived in Oz. It's a wonderful place to go for a year or two, to explore their amazing countryside, and as a base for travel around the Pacific region. I was offered a permanent job but turned it down because:
Sexism - it is 100% lad culture. Don't bother watching Life of Mars to rediscover the 70s - just go to Adelaide.
Ditto racism
It's conformist and unadventurous. Don't be fooled by all the cosmopolitan Australians you meet travelling. They're the exception. Australia is Porpoise Spit (Muriel's Wedding), not Crocodile Dundee 
The countryside is beautiful, but the towns are ugly as fuck
It's difficult and expensive to travel outside of Australia especially if you're on the east coast.
It's boring. There's just not much to do, at least compared to any major European city. Outside of Sydney & Melbourne (and possibly Perth, have only been there a couple of times), restaurants close by 9. Museums and art galleries are tiny.
I missed old stuff. There is no record of their history in the landscape. There is a long history, of course, but, because aboriginal peoples did not build in stone (except in Tassie), you can't see any trace of it.