Offer your thoughts or opinion on the input financial query or topic using your financial background.

What is the most common and profitable investment for a good retirement in Australia?
I don't look to Super or Pension, I am working on self funding. My method is work in Sydney and buy a house in Sydney (I bought 6 years ago). Let my property rise on this stupidly insane Sydney growth (my place has risen by 76% in the last 6 years and thats in a "bad" economic climate). Each time the equity hits a certain point get an investment property on an interest only home loan and rent it out. Build this portfolio up as much and as quickly as you can. Repeat over and over until I decide to retire. Sell up investment properties and buy NOT IN SYDNEY where it is much cheaper and move there, keep the main house I always lived in as by this time I will own it outright, rent it out for an income that will more than sustain me in my retirement. Although there is also merit in the idea of sell the one you lived in and use the money to pay of one of the investments, this way you avoid capital gains tax. This idea came to me last night :)