Well because, according to one strident critic of NG, Leith van Onselen -
Tax purists might also disagree with such a change to negative gearing on the basis that it is wrong to discriminate among financial assets. My response is that housing is an entirely different type of asset from other financial assets, like shares. Firstly, housing is a social asset and shelter is a basic human need. Second, those buying other financial assets are bidding against other investors that can also access interest deductibility. However, with housing, the main other bidders are owner-occupiers that do not have access to this advantage (interest deductibility). So we are not comparing 'apples with apples' with regards to housing versus other financial assets.
(from -
http://www.unconventionaleconomist.com/2010/06/negative-gearing-exposed.html)
And there I think you have the nub of the matter. Housing is a basic human need.
Now where did I hear it once said, "From each according to his ability, to each according to his need"?
Arguments against providing 'incentives' or 'making money' out of RE is anachronistic even in contemporary communist China, where it will muster little support, if not leaving its hearers ROTFL. Of course in young Australia one can experiment and indulge in idealism supported in comfort by a social safety net.
If the proposed NG is wrong for individuals presumably it is still not wrong for other entities like companies and TFs to invest and profit in RE housing. Never mind the inconsistency.
Housing is a basic need and individuals should not 'exploit' this and profit from it? What about food, drinks, health care, security do they rank less as basic needs? Should the individuals steer clear of these classes of investments as well to avoid immoral profiting from it, whether it be through investment units or directly in personal names? What's that saying about the pot calling the kettle black?
Is the PI given unfair advantage over the owner occupier? yes or no. PI are subject to the vagaries of the loans just as owner occupiers are. Some PIs choose to negative gear, incur immediate losses in anticipation for long term capital gains, and as a result the tenant is subsidised. PIs pay tax, taxable income or CGs on IPs, owner occupiers do not.
Policies that liberate investing in IPs have lead to growth in Malaysia, Singapore and China. Presumably, withdrawal of such policies (eg abolition of NG) will reign in growth. This would be at least a second hit on RE investments inclusing the previous obstacle against overseas investments in RE. In a globalised investment portfolio, more funds will flow to overseas investment classes. As employment correlates with growth and vice versa, I sense the proposal to abolish negative gearing on IP has more value as a policy of envy than economic growth or employment.