One of my primary "ahhh" moments was getting trucks without it.
At USX we had radar but all it did was tell us the speed of the person ahead. That was fine.
At Schneider my first truck as a newb was the oldest in the fleet. It had nothing on it and the cruise wasn't even governed. That was nice.
Then I moved into these newfangled irritations and became stressed like crazy.
Neither of my trucks has anything now and it's back to being unstressed. Just normal passing and cruise that holds.
I couldn't go back. I'd have a nervous breakdown.