Goreripper,
it's my view that the taxation benefits given to people to negatively gear housing (and I know guys on less than $100k per year who negatively gear anything from 2 to 10 houses...apparently the first two are the toughest, after that it's easy) are increasing the property prices top the point that in order to fulfill the Oz dream, people spend too much repaying the banks, and retire with too little. This necessitates the reverse mortgage.
Stop negative gearing on property...just like the Productivity Commission has suggested...and housing once again becomes a place to live.
I they want to keep negative gearing, then get like the U.S., and allow the interest on the primary residence to be a tax deduction.
Either way, I'm happy.
But don't let people get rich off the rental income from the poor (and the other taxpayers).
As per you post, people make some shocking decisions when it comes to having it now (and paying interest forever), or holding off and doing things when you can afford.
I HATE owing anybody else anything, so probably take that issue to the other unhealthy extreme.