If you're lucky to live in a place where deer are plentiful, you'll know they're pretty cool creatures. You can watch them for hours as they graze, play, and generally act like deer. They're also delicious.
But in that same vein, if you live in a place with a lot of deer, or in a place where deer roam freely, you'll know how hazardous they can be when they begin to cross roads. Suddenly, this intelligent, highly skittish creature that can disappear in an instant when you're hunting them, turn into blithering idiots and decide not just to cross the road when traffic is present, but run headlong into you as if drawn by magnetism.
I mean, the joke in Gilmore Girls about the deer hitting Rory and not Rory hitting the deer is one that could've only been written by someone who's experienced the stupidity of a deer. And in the last two years, I've been hit by a buck square in the side of my truck while trying to dodge him, and drifted around another deer on Honda's CRF300L Rally because they were both stupid as all hell.