(From an Aussie)
-Cons:
-Every year, at least half the country will be on fire, but we have water restrictions, so we've gotta squidgy out the fire with a sponge. Exception below...
-If not on fire, you will be flooding. Dry cracked ground causes flash floods in obscure locations.
-Sharks, Blue ringed octopus, box jellyfish, blue-bottle jellyfish, seen around most the country at differing times of the year.
-Crocodiles, snakes and various spiders await you if you venture inland.
-Large temperature shifts, hitting 1-2 degrees on cold nights, but 40 degrees on hot days. Highest I've seen was a 46 degree day, and I live on the coast.
-Horrible government...
-$100 games
-Terrible beer (well, I've got a soft spot for Teddies (tooheys extra dry))
-Lots of racist people, generally the older generation
-Pros:
-Fantastic beaches
-Beautiful women
-High minimum wage (around $16.50 an hour)
-Very high pay for tradies, electricians and plumbers averaging around $2000 a week. Extremely high if you work in the mines, my miner buddies earning $3000-4000 a week.(More then most doctors earn)
-Government will pay you $500 a fortnight to study at university
-Very strict firearm laws
-Overplayed "Dangerous" animals, keeping foreigners out.
Special note goes to the Sydney Funnel Web.