I have a laptop and a Surface Pro 3. Not a day goes by when I don't try to touch my laptop's screen, despite its lack of touch input. It's not that I want to touch it, but that it just comes so naturally compared to moving around mouse pointer, at least for simple things like play/pause, scrolling through images or zooming. Even if I'd not use touch on a laptop that often, it'd be less jarring everytime I reach forward and expect something to happen. It's like when I was back with Chrome browser and scrolled, expecting my gaze to be at a certain point after the (laggy) scrolling and it didn't happen. Jarring.