It is possible that you've learnt to drive like that and that it works for you.

But, I feel that this depends on the type of driver and their personality. I, for on, have never felt comfortable with cruise controls, even adaptive ones, let alone partial self-driving. I had always found that I am more comfortable when I was driving rather than trying to make sure that the adaptive cruise control is able to make a complete stop in case of emergencies. Perhaps I'm just a little untrusting and paranoid :).