No, it's not because it doesn't work well. I actually find that it does a great job interpreting when I want to look at the watch. The problem is all of the false positives it creates when I'm just moving my arm around and don't intend to look at the watch. I can't help but feel that it's adversely affecting battery life, and it kind of bothers me to have it turning on and off all the time. When you turn the feature off, a quick tap with your other hand is all it takes to activate the screen, which really is not a big deal, and I like that the screen stays on longer that way. I haven't decided which way I will go, but I think I'll try it for a day with it off and see how it works. On a related note, even though I had "Resume to clock face" selected, it never seemed to work for me. It always seemed to go back to the app I was using beforehand, although maybe you have to not be interacting with the watch for a certain amount of time for it to go back to the face?