Lol don't think too far ahead. Who knows what the world will be like in 20 years. Australia is a 1st world country and has many industries that are emerging or developing. You and your family should be good there to spend the rest of your lives. University degree doesn't really matter much unless you're going to an ivy league college plus it's expensive. Student debt is another reality most people have to deal with here although it gets paid off quickly once you find a stable job.Btw their is one thing i do want to say, My mother has spoken to me a bunch of times and has told me that when you have a child, Make sure he/she is born in USA and give them dual citizenship because US universities are massively > Aussie universities and job market is better their which i agree with.
I would want my child to live their 0-18 live in aus so that they can have a stress free life and a very high quality of life which aus is second to none in, but probably work in us.
The good thing is, Visa free travel van aussie passport means we don't have to worry much about immigration officers causing problems.
Australia is extremely good if you wish to go into tech. This country is obsessed with tech and hence the rise of atlassin, Canva, Affinity, Leonardo AI, Glitch and many more which have become global powerhouses.
Currently theirs an Ai revolution in Australia and startups are ai focused, but besides ai, tech and programming, It's education and job market is lacking behind.
Construction industry in Australia is decades behind other countries, entertainment sector isn't high either, medical fields are avg, Australian doctors and aussie medical education isn't that great, engineering is up and down, software engineers are at a sky high in aus but mechanical or aviation engineers are at a low. Business, advertising, marketing and entrepreneur industry is up and down as well
Australia is good for culinary and Tech(software and ai) but behind others.
So I do agree with you, that since I have family and friends living in USA, I will allow dual citizenship for my children.
But I'd still want that they live with me till their 18. Even if I was a dual citizen, I'd still want them to spend time with me till their 18 in Australia.
Don't listen to other people as to what is right for your kids. Let them make their decisions once they are adults. Maybe they'll wanna play cricket for Australia or find an interest that is better served in Australia. Come to US if only makes sense for you to be here not because your mother told you to.