As an Australian, I feel strangely personally offended by your disgust for kangaroos. Like, I agree, male Red kangaroos are huge and terrifying. But the only kangaroos most people see are sweet little Greys, who continue to graze happily as you walk past them, and stare at you calmly with their huge, dark, all-knowing eyes. Which, you know, can be kinda creepy. But c'mon, Dad. Don't be mean to kangaroos. We're not mean to your Deer friends just because Moose exist and are terrifying.
I understand your concerns, and I think that all animals deserve respect and safety. I should have been more specific about what kind of kangaroos I think will be there to meet me at the gates of my personal hell. Not all kangaroos are nightmare machines. Some are chubby jumping gals, and those are pretty good.
However, male red kangaroos are scary and I am scared of them, and if I ever saw one up close, I would black out and pee my pants and cry, in no particular order.