The answer to the above is globalism. You can't compare Australia now with what Australia was in the 80's or even the 90's. Australian politics was killed post-Howard. With substantial inflation and global opportunities you would have to be either an angel with no self interest or a moron with only self interest to be a politician in Australia. There are tens of thousands of jobs in Australia and throughout the world that pay better and are easier / less risk than being a politician in Australia in the 21st century. So the only politicians we have are crooks, influenced by foreign and domestic bribes, or morons who couldn't contemplate sound economic, health, energy or foreign policy if you gave them unlimited resources.You made the claim that the Labor and Liberal parties of Australia (and the members of those parties) dont care about Australians and are only in it for themselves.
They've been the ones running the country for the better part of the past 100 years, or more or less since the country was formed.
The country has among the highest standards of living, political stability, quality of life etc in all of recorded human history.
The actual reality of the country you live in doesnt match your central claim.
If you want to see a country where the guys running the show don't give a **** about their people, and are only in it for themselves, pick a country in Africa.
Contrast it with Australia.