Real question, then, from someone who only bothers driving when he must and even then in a 2016 model: Why do you use it? What beneficial purpose do you find it to serve?
I'm asking because I feel I must be missing something, inasmuch as to have my hands on the wheel while not controlling the car is an experience with which I'm familiar from skids and crashes, and thinking about it as an aspect of normal operation makes the hair stand up on the back of my neck. (Especially with no obviously described "deadman switch" or vigilance control!)
Here's a simple example from last week. FSD was in control on my way to work, stopped at a red light early in the morning before the sun was up. The light turns green and FSD does not accelerate. I figured it was somehow confused and I was starting to move toward hitting the accelerator myself when a car comes flying through the red light from the driver's side. I hadn't noticed this car, but FSD saw it and recognized it wasn't slowing down. I could see there were headlights, but it wasn't clear how fast it was going.
It's just nice having a 'second set of eyes' in a sense. It's also very useful when driving in unfamiliar cities where much of my attention would be spent on navigation and trying to recognize markings/signs/light positions that are atypical. FSD handles the minutia of basic vehicle operation so I can focus on higher level decisions. Generally, at inner-city speeds, safety and time-to-act are less of an issue and it just becomes a matter of splitting attention between pedestrians, obstacles, navigation, etc. FSD if very helpful in these situations.