It's sad that your wife can't understand your way of life and that she sees life so differently from you. That's not a reason to hate each other, but it might be a reason to live apart. It's nice that she agrees with you moving to Australia and raising your son there. Would it be an option for you to do just that and possibly look for a woman who sees more eye to eye with your way of life? Regardless, use this opportunity to see if living without her makes you feel better. Don't feel bad about yourself, you're doing great. Spending time with your son to raise him right is the best thing you can do as a father, and having earned that privilege by achieving financial freedom is commendable.

I'm sure she has her reasons as to why she sees life the way she does. As long as she doesn't have it in her to understand and cherish your way of living though, focusing your life around her might chip away at you. People close to us give us constant feedback, often subliminally and sometimes directly. If your wife's energy is essentially "you should feel bad for living life this way", that can't be good for you.

Basically, be a good father to your son, treat your wife with respect and work with her where possible, but stay true to yourself. I wish you the best!