I'm solidly in the ranks of 'late adopter' when it comes to most of the driver assist tech. In my case this is in a Tesla but I think general comments applies across cars.
City driving: I want to be the driver, and I want the car to make me a better driver.
Interstate driving: ACC is great, maybe the car taking more control is OK
On a personal note, my driving is most deficient when it comes changing lanes. In part this is due to aggressive drivers, and in part due to a bad habit I have of drifting while turning my head to look at the blind-spot. For the last couple of days I've been trying out leaving the rear camera on the screen all the time. This takes learning since cars are quite a bit closer than they appear but the view is outstanding. I'm going to keep using it although my preference would be for the rear view to activate when I flip the turn switch.
If you have a big center screen and you have the option, try it out.
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
2018 Tesla Model 3 LR, Delivered 6/2018