If you are lucky enough to live in a country which allows negative gearing, then this can be a great incentive to buy property as an investment.
However, you should never look to buy a property simply because it will reduce your tax bill. Negative gearing only helps to lessen the cash loss that you make.
If you buy a property and it costs you $100 a week to hold, that is a loss, also known as negative cash flow.
You would only accept this loss if the future capital gains would cover the loss and then some!