Point being, there's tremendous tailwind for inflation over the next 30 years, not to mention interest rates worldwide are at near 5000 year lows. 

Worldwide interest rates at 5000 year lows 2. 40 year low cap rates (40 year high prices) 3.

In my opinion, Bigger Pockets does a great job with solving this problem as it expands your network and gives you opportunities to meet people worldwide with similar goals. 

My guess is you are a gambler.

Most of us here work with clients worldwide. 

Kenny Rogers- The Gambler

  #1 brokerage in Austin, profitable, debt free, growing like crazy, growing worldwide, wrote the books on Single Family Investing.....

If you read my post carefully you would understand that the % is based on those that invest in Real Estate world wide.

US citizens are taxed on their worldwide income.If the DR also taxes the gain, you generally would be able to use foreign tax credits against your US liability.You also need to examine the difference between net sales proceeds and your adjusted cost basis. 

Great exchange rates.Check with your CPA, but I don't think you pay any taxes just to transfer the money.The US laws do extend worldwide though, so potentially you will have to pay something on the capital gains, but you do that probably even if you don't transfer the money back to the US.We do have a 1031 exchange law, but I don't think you can 1031 funds from Australia to US investment property, but you might ask a 1031 expert about that.You might also check to see if Australia has any kind of tax treaty with US so that you don't pay double taxes.