I can totally relate to the OP, albeit we are in Perth. The first 2, 3 even 4 years were great, lots of new stuff, lots of adventures. But realistically, I have struggled since then, and we've been here 10+ years now. We've had some great times here but if I list them as a trade off against what we've missed out on, a bit of nice weather, a few barbies and some travelling doesn't really cut it. I've mentioned in other posts that I have no option of returning now, wouldn't be fair on others so I wouldn't pursue it. But if it was me on my own (well, me and the dogs), I'd be gone tomorrow.
I don't want to start a row about where is better, there is no generic right answer to that. But you know in yourself where home is and Australia has left me a bit hollow in that respect, once the 'holiday' ended. Good luck with your move Lady T.