Cruise control is *great*. I still recall the first time I got to use it in my first car that had that system.
It very, very much relieves a lot of stress and discomfort in driving very long distances on super highway type roads. And, you don't want to use it ijn heavier traffic or iffy road conditions, such as snow, ice or rain.
So, when it's on, keep your foot ready to go to the brake pedal so as to turn it off, and/or keep a finger close to the Off button.