Do I/you need a will?

I don't need one. I don't have any dependants either but I have descendants and they will inherit automatically according to Norwegian law.

For most people who have family (children, parents, uncles, aunts, cousins, etc.) in Norway the rules would automatically and compulsorily distribute two thirds of the estate to the children or their issue. Each child getting up to 1.5 million kr. (about 150 000 USD, not sure what that is in AUD). If the deceased had no children and no will it goes to their parents and thence to their heirs if the parents had already died.

For couples where there is no will the surviving partner can decide whether to distribute the deceased's fortune immediately to the children in the legally defined amounts (skifte) or delay it until their own death (uskifte). The surviving partner can treat the property of the deceased as their own including selling the house, etc.

The rules were simplified and liberalised last year so I'm likely wrong in some details.

But unless, like me, you are an immigrant with no extended family in the country the government would most likely not get any of the money. In my case all three of my children would have to predecease me for the government to get it but if I had parents here and they had other children then even if all my children die without issue then it would go to my parents, siblings, nieces, nephews, etc.

I have one but I need to update it.

No, I do not have a legally binding will in place. Although my only dependents are my cat and dog, that I do not yet have a will is only because of indecision about who or what entity to make the beneficiary.
I think everyone needs a will, including me. Certainly in my state, the state will get everything I own if I die before I have one.

Always had a will since got married. Especially kept up to date once kids were about. Plus to have my personal distributions detailed.

I don't have anything but debts to pass on

not sorted out my will yet.

I have nothing to my name and no money

I decided I needed one after people my age began dying young. Actually, it was Luke Perry and director John SIngleton. So, my brother gets most of my stuff if I buy it anytime soon.