Money, money, money
https://en.wikipedia.org/wiki/Agriculture_in_Australia
The beef industry is the largest agricultural enterprise in Australia, and it is the second largest beef exporter, behind Brazil, in the world. All states and territories of Australia support cattle breeding in a wide range of climates. Cattle production is a major industry that covers an area in excess of 200 million hectares. The Australian beef industry is dependent on export markets.
Wool, dairy,lamb all important export goods. (remember sheep and catttle are invasive species!)
How much money does the government get from alcohol and tobacco? How many people's health are effected by them?
Government pays for healthcare so healthy people living a long time is a drain on pension resources but less of a drain on the health system under their life times, but .old people have higher health costs so ...party and die young, and make the government happy!.
