The sad thing is that so many people stay on in Australia for years, focussing on the financial benefits of staying and thinking, "I'll go home when the time is right" or "I'll go home when I retire", only to find they can't afford to make the move in older age -- and then they're trapped in Australia for the rest of their born days.
For that reason, I encourage anyone who's decided Australia isn't for them, to get on a plane home as soon as they can manage it, even if it does mean losing money. Staying only damages your mental health. The sooner you get back, the sooner you can start building your life again.
I'm very lucky that I felt at home in Australia from the moment I landed, but then I was never very attached to my home country in the first place.