One nasty thing we do not have in the Perth area is box jelly fish, very common up north and in Queensland and they are deadly.
Employement would be good in WA as for the mining boom. Look on seek.com.au
In Italy did you sail il Lago di Garda ?
In the Cairns Post www.cairnspost.com.au/nocookies?a=A.flavipes
I've had a 5M+ python in my yard, I'll look for the photos.
I feel it is my duty to give you the correct information.
some of the people here are not telling you the entire truth.
Australia is a dangerous place. Crocodiles and snakes are everywhere, as well as spiders. Also at the moment there is an outbreak of drop bears. so if we are walking under trees we need to wear helmets.
Windsurfing well you only get about 3 weeks a year windsurfing but he best place for it is Canberra.
Raffaeu, You do know these guys are only "pulling your leg?" I hope?
That's the Australian sense of humour.
I will probably get lots of red thumbs here for spoiling the fun, but here's the truth:
We do have snakes, crocs, redbacks and sharks.
The snakes are venomous but few people ever see one, let alone get bitten by one, especially in the cities. They are more dangerous to pets, but good antivenenes are available if you are close to a vet. Quarantine is required to bring pets into Australia.
Crocs are more dangerous but are confined to the far north.
The irikanji jelly fish are life threatening but are again confined to the far north and are seasonal. You can protect yourself from those by wearing a body suit whilst in the water.
Shark attacks occur occasionally, but are so uncommon relative to number of water users that few people avoid going in the water unless they have just watched "Jaws". Of course if sharks are seen, don't go in the water.
Redbacks are plentiful but their webs are fairly obvious. I don't know anyone who has been bitten by one.
As has been said kiter lines are more likely to cause you injury...
Guys thanks for the suggestions but I work with a Australian guy and a New Zeland one and I got your sense of humor ...
I will probably organize a trip for the next spring to view the country and see how it would be for me and my family.
The only concern we have is about snakes as they are the 'unpredictable' but it seems it is not a big deal in the city.
For example, if you move to Texas, even in Austin (big city) snakes can be a problem.
For sharks, again, I sail only over the reef and never saw one but over the reef ... who knows. 
Drop bear is the most fancy, like Bermuda's triangle here ...
