I agree totally with Bevdeforges, work out exactly what you want for yourself and your family. It is good to hear other peoples success stories but what is good for them, will be different for you and your family.
It is useful to create a list of positives you want, and why you want them, what will be better, how will it meet your values. Then you can begin investigating if they will be fullfilled in Oz or maybe somewhere else. Good luck with your decision making!
I know when we moved to Canada I was so focused on getting there once I arrived I lost track of why we had moved, became very homesick, and ended up going back to the UK for 2 years, before realising the things I really wanted for myself and family were best met in Canada, we are happily settled here now, but could have saved a lot of hassle if I had been clearer on what I wanted right at the beginning. Best Wishes Louise