They're beneficial since they consume ticks in large quantity. Tick borne illnesses such as Lyme Disease are a real problem for pets and humans here.
Good on you for taking out your version, especially in NZ where they must be an invasive terror to the native birds.
I want to apologize for the harsh remark I initially made to you.
You think I am an Aussie. I am a Kansan, as my Freeper name is “man from oz.”
I am fully aware of the US version of possum. Yes, they may eat ticks, and good on them for that. However, I still view them as Vermin.