Actually I do use it on my properties in Australia, which I probably couldn't have afforded to buy if I had stayed there. Tax on Australian income for non residents is about 29% from the first dollar BUT it doesn't go up after that to the 45% level which locals can easily end up paying. Also I'm not liable for tax on worldwide income.
I've thought about buying a business back in Australia which would make sense provided I don't fall into the residence trap.