But doesn’t it all depend on the particular balance in your own life? What it costs to live, how you want to live, whether you have/want family, whether you like what you do?
Somebody who loves their work and finds it meaningful may be happier with less money than someone who only wants to retire as soon as possible.
I can’t imagine making $300k (even Australian money) and I can’t imagine that it would make me any happier.