If people would learn to actually drive their vehicles in a safe manner instead of depending on the technological advancements to save their asses, there would probably be a lot less accidents. Drivers should be responsible for the safe operation of the vehicle, not the vehicle saving the careless driver.
That's why they're called accidents, not purposedents...
I grew up in Indiana driving on snow and ice. So when we have our five - ten minutes worth of winter down here in Oklahoma, I have no issues driving. Unfortunately, just because the weather goes to crap doesn't mean the world stops, which means all those poor bastards that grew up down here that have never had to drive for months at a time on nasty roads simply have to make do ... and they do, quite poorly.
Also, keep in mind that you're going to get older, and as you do so, the inevitability of your reflexes getting worse and your reaction times increasing WILL happen. So having a car that can help keep you in your lane, or can maintain a safe distance between you and the car ahead of you on its own, can help you drive safer than without it.
I'll just take the system I'm familiar with - Subaru's Eyesight system with lane keep assist. Here in OKC, there are a LOT of limited access highways, simply because the town is so darned big. (It's slightly larger than the Brisbane metro area with about two-thirds the population.) So if I want to go to the Outlet Mall - I drive on surface streets down to I-240 (about 6 minutes). Then I hop on I-240, turn the Adaptive Cruise Control on for 70 mph, turn lane keep on, and then I've got 16 miles of I-240 and I-40. Since we have a major construction zone at I-35 and I-240, I just let the car keep distance. When the lanes make a bit of a zig, the car keeps me in my lane. I'm able to spend more time watching the OTHER drivers, checking out my blind spot system to watch for idiots zooming up behind me), and pay more attention to what's going on around me than simply on keeping my car in the lane as it's zigging and zagging left and right. And when traffic slows itself down to 30, the car slows itself down as well, without me having to do anything.
I've made those 1,200 mile road trips before, when I was younger. After having had this system for a while, I wouldn't have a problem hopping in the car and making one of those trips again - because I know the car is going to do what it can to help keep me safe. (And, of course, it's a Subaru. It's not sexy or exciting, just reliable and safe.)