Adaptive cruise is my second most hated feature in my car. Instead of holding my preset speed and throwing itself into a corner, it backs off to old lady speeds at the slightest curve, making it effectively useless as a cruise control, and meaning that I can maintain a better speed with my foot.

Number one most hated is definitely the "lane keep assist" that tries to force me into the oncoming lane on those same corners unless I fight against the steering wheel.