A couple points I would like to make:

Australia is incredibly socialist and its citizens pay through the nose for it. I can't speak for many Americans living in Australia, but I can say that I know one who does and it is very hard to live in Aussie land.

Universal Health care has it's ups and downs. A major down will be the brain drain of Pharmaceutical research companies.

As much as you would love to tout your Darwinist theory, I would like to see you deny yourself medication when you become an old decrepit man or when your parents develop some sort of cancer if you aren't trying to get them all they help you can.