I consider Wolf Creek to be a good movie because it makes you remember the story and characters after you've watched it I watched this first around the time it was released, and then watched it again during the pandemic lockdowns (2020). The Mick Taylor character (played brilliantly by John Jarratt) is very believable as your typical outback bloke who happens to be a serial killer. There's no over the top back story.

Unfortunately, IMHO, it's these same characteristics that make it a not so awesome movie in this genre. With every rewatch, the "shock factor" gets diluted. Because the damn movie is so good, and you remember what happens next from the last time you watched it. I believe this movie is based on actual events. So, there's only so much the writers can do to in that context.