I will never ever visit Australia out of fear of their dangerous and toxic species. The box jellyfish! Some spider with huge fangs that chases you and bites you! Snakes to make you skin crawl. How do the Aussies live there I wonder?
It's called "perspective".
Frankly, you have more chance of being in a fatal car accident.
Statistics say that if you roll a six-sided dice, the chances you're going to roll a one are one in six. You can roll the damned thing a hundred times, but for
each roll it's still only one in six.
However, your chances of rolling a one if you roll a six-sided dice a hundred times are significantly larger.
That's all it takes to be taken by a croc, or stung by a box jellyfish. Or a shark, or a snake, or... whatever.
All you have to remember is that going swimming in a billabong or a river in the NT, is like driving a car through a red light at midnight at 140kph. Sure, you might get away with it fairly often.
But it only takes one bad roll.
*edit - the only tourist I ever remember rolling a one on her first try was Ginger Meadows. I was also going to say that she probably shouldn't go to Vegas, but it seems a little redundant.