Since this is the internet, I will chime in though I've never lived there. I spent two weeks there once and I loved the trip, mostly. It was a multi-activity trip. The two nights we spent on a working cattle ranch were not fun for this "pescatarian." (I hate that word, but it's the common one used.) The three days (or was it four?) we spent on a live-aboard dive boat on the Great Barrier Reef were the best snorkeling I've ever experienced. (I was not yet a scuba diver.) There are, apparently, more things that will kill you there, per square meter of land, sea, and air, than anywhere else in the world. There is a sea shell that, if you pick it up, the creature inside will reach out and sting you and you will die. There are lovely limpid pools below beautiful waterfalls, with fresh-water crocodiles that will leap out, drag you under, and eat you. A Prime Minister, walking along the beach with his entourage, went in for a dip and was never seen again.
Being an island, it's surrounded by the sea, so of course there will be storm surges and tsunamis, and the interior is barren desert. I would say that in terms of social policies, Sweden is far more civilized, but also has a far harsher climate. Australia has a very wide range of climates.
As to how it feels to live there, of course I have no idea. I've heard, for what hearsay is worth, that it's very hard to get permission to emigrate there. U.S. citizens can get a visa to visit just by going on line, unless they have a criminal history, in which case they have to mail their passport to the Australian embassy with a description of their crimes. If the crimes consisted of peacefully protesting nuclear weapons, the visa is granted, at least it was in the case of yours truly.
I would go back and visit again if it were not about 16 hours of airline flight and two layovers away from me. I might anyway. It's possible, though I have no immediate plans for it.