Nothing wrong with Tin ****y mate.
Our fighter fleet is primarily a deterrent. Yes, they could be used overseas, but not at the risk of not providing a suitable force at home.
Iraq 2003 is an example. Hornets provided a suitable strike capability, intergrated with our international friends, but with enough aircraft and crew back at home to do what the RAAF is primarily and often forgotten that it is tasked with, defending Australia.