We are lucky, we have a security blanket of sorts.
You can plan, think about what it will be like, then when you get there, it is all different. Planning is needed, but be prepared to change
The Pilbara. We were hoping to get there this year, but funds are a bit short. Supposed to be one of the most beautiful places to see. Hopefully next year, but...
I guess it depends on what you want out of life. We are lucky to be in one of the best countries in the world. Enjoy it. Make money. Do whatever. You have have a choice unlike many others in the world.
Showers. In the middle of nowhere, you set up your 12V shower, water feed from a 20L jerry can, water on to get wet, off and soap up then rinse, cold, standing on a rubber mat to keep the mud at bay, all soaped up, and the next thing you hear is a car coming your way. Amazing how fast you can rinse off, quickly throw on some clothes and sit down with a wine or whatever.
Envigorating and, well, all part of the enjoyment. Normally the only witness to your bathing is the wildlife. A kangaroo, lizard, possum or whatever. It is a goooood life.
As you say, you will get out of it what you put into it and want to do.
Best of luck.